Multi 3430 - Fagerberg

fagerberg.dk

Multi 3430 - Fagerberg

pHOperating manualMulti 3430Digital pH / D.O. /conductivity meterfor 3 digital IDS sensorsba75865e13 09/2011


Multi 3430Accuracy whengoing to pressThe use of advanced technology and the high quality standard of our instrumentsare the result of a continuous development. This may result in differencesbetween this operating manual and your meter. Also, we cannotguarantee that there are absolutely no errors in this manual. Therefore, weare sure you will understand that we cannot accept any legal claims resultingfrom the data, figures or descriptions.Copyright© Weilheim 2011, WTW GmbHReproduction in whole - or even in part - is prohibited without the express writtenpermission of WTW GmbH, Weilheim.Printed in Germany.2 ba75865e13 09/2011


Multi 3430ContentsMulti 3430 - Contents1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.3 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111.4 Automatic sensor recognition . . . . . . . . . . . . . . . . . . . . . 121.5 IDS sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121.6 IDS adapter for analog sensors . . . . . . . . . . . . . . . . . . . 132 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 163 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.1 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.2 Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.3 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.3.1 Inserting the rechargeable batteries. . . . . . . . . . 193.3.2 Connecting the power pack / charging thebatteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203.3.3 Switching on the meter. . . . . . . . . . . . . . . . . . . . 213.3.4 Setting the date and time . . . . . . . . . . . . . . . . . 224 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 234.2 Login with a user name . . . . . . . . . . . . . . . . . . . . . . . . . . 234.3 General operating principles . . . . . . . . . . . . . . . . . . . . . . 264.3.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 264.3.2 Display of several sensors in measuring mode . 274.3.3 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284.3.4 Example 1 on navigation: Setting the language. 304.3.5 Example 2 on navigation: Setting the date andtime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324.4 Sensor-independent settings . . . . . . . . . . . . . . . . . . . . . 344.4.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344.4.2 Data storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 364.4.3 Automatic Stability control . . . . . . . . . . . . . . . . . 364.4.4 Automatic switch-off . . . . . . . . . . . . . . . . . . . . . . 364.4.5 Display illumination . . . . . . . . . . . . . . . . . . . . . . 36ba75865e13 09/20113


Contents Multi 34304.5 Sensor info. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374.6 Channel display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384.7 pH value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394.7.1 General information . . . . . . . . . . . . . . . . . . . . . . 394.7.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . 404.7.3 Settings for pH measurements . . . . . . . . . . . . . . 424.7.4 pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 444.7.5 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 494.7.6 Carrying out an automatic calibration (AutoCal) . 504.7.7 Carrying out a manual calibration (ConCal) . . . . 544.7.8 Displaying calibration records. . . . . . . . . . . . . . . 584.7.9 Continuous measurement control (CMCfunction) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594.7.10 QSC function (sensor quality control) . . . . . . 604.8 ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 634.8.1 General information . . . . . . . . . . . . . . . . . . . . . . 634.8.2 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 634.8.3 Settings for ORP measurements . . . . . . . . . . . . 654.9 Dissolved oxygen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 664.9.1 General information . . . . . . . . . . . . . . . . . . . . . . 664.9.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 674.9.3 Settings for D.O. sensors(menu or measurement and calibration settings) 704.9.4 FDO ® Check procedure (check of the FDO ®925) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 724.9.5 D.O. calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 744.9.6 Displaying calibration records. . . . . . . . . . . . . . . 774.10 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 784.10.1 General information . . . . . . . . . . . . . . . . . . . . . . 784.10.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 784.10.3 Temperature compensation . . . . . . . . . . . . . . . . 814.10.4 Settings for IDS conductivity sensors . . . . . . . . . 824.10.5 Determining the cell constant(calibration in control standard) . . . . . . . . . . . . . 854.10.6 Displaying calibration records. . . . . . . . . . . . . . . 874.11 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 884.11.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . . 894.11.2 Automatic storage at intervals . . . . . . . . . . . . 894.11.3 Editing the measurement data storage. . . . . . . . 924.11.4 Erasing the measurement data storage . . . . . . . 934.12 Transmitting data (USB interfaces) . . . . . . . . . . . . . . . . . 944.12.1 Outputting current measurement data . . . . . . . . 944.12.2 Transmitting data (to a PC). . . . . . . . . . . . . . . . . 944.12.3 Connecting the PC / USB-B interface (USBDevice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 944.12.4 Options for data transmission to a PC (USB-Binterface). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 954.12.5 Connecting the USB memory device / USB-Ainterface (USB Host) . . . . . . . . . . . . . . . . . . . 964 ba75865e13 09/2011


Multi 3430Contents4.12.6 Data transmission to a USB memory device(USB-A interface) . . . . . . . . . . . . . . . . . . . . . . . . 964.13 Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 974.13.1 Resetting the measurement settings. . . . . . . . . 974.13.2 Resetting the system settings . . . . . . . . . . . . . . 995 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . 1015.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1015.1.1 Replacing the rechargeable batteries . . . . . . . 1015.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1025.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1025.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1026 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1036.1 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1036.2 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1056.3 Dissolved oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1066.4 Conductivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1077 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1097.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1097.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . 1108 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1139 Appendix: Firmware update. . . . . . . . . . . . . . . . . . . . 1179.1 Firmware update for the meter Multi 3430 . . . . . . . . . . 1179.2 Firmware-Update for IDS Sensors . . . . . . . . . . . . . . . . 118ba75865e13 09/20115


Contents Multi 34306 ba75865e13 09/2011


Multi 3430Overview1 OverviewThe compact, digital precision meter Multi 3430 enables you to carryout pH measurements, ORP measurements, conductivity measurementsand dissolved oxygen (D.O.) measurements quickly and reliably.The Multi 3430 provides the maximum degree of operating comfort,reliability and measuring certainty for all applications.The Multi 3430 supports you in your work with the following functions:• proven calibration procedures• automatic stability control (AR),• automatic sensor recognition,• CMC (continuous measurement control)• QSC (sensor quality control).3pH211 Keypad2 Display3 Socket fieldba75865e13 09/20117


Overview Multi 3430The two USB interfaces (USB-A and USB-B) enable you to:• Transmit data to– a USB memory device– a PC• Update the meter firmware.1.1 KeypadF1F2MCALARPRTSTORCLESCMENUENTERMulti 3430In this operating manual, keys are indicated by brackets .The key symbol (e.g. ) generally indicates a shortkeystroke (under 2 sec) in this operating manual. A long keystroke(approx. 2 sec) is indicated by the underscore behind the key symbol(e.g. ).F1::Softkeys providing situation dependent functions, e.g.:/[Info]: View information on a sensorF2:Switches the meter on or off:Selects the measured parameterCALAR::Calls up the calibration procedureDisplays the calibration dataFreezes the measured value (HOLD function)Switches the AutoRead measurement on or off8 ba75865e13 09/2011


Multi 3430Overview::::::Saves a measured value manuallyOpens the menu for the automatic save functionDisplays the manually stored measured valuesDisplays the automatically stored measured valuesMenu control, navigationMENUENTERPRT::Opens the menu for measurement settings / ConfirmsentriesOpens the menu for system settingsOutputs stored data to the interfaceOutputs displayed data to the interface in intervals1.2 Display34521Info22.09.2009 08:006781 Status information2 Measured value (with unit)3 Measured parameter4 Continuous measurement control (CMC function)5 Channel display:Plug position of the sensor6 Sensor symbol (calibration evaluation, calibration interval)7 Measured temperature (with unit)8 Softkeys and date + timeba75865e13 09/20119


Overview Multi 3430Function displayindicatorsAutoCale.g. TECConCalErrorARHOLDCalibration with automatic buffer recognition, e.g.with the buffer set: Technical buffersCalibration with any buffersAn error occurred during calibrationStability control (AutoRead) is activeMeasured value is frozen ( key)Batteries are almost emptyMains operationMains operation with charge functionBatteries are automatically charged in the background.Data are automatically output to the USB-B interfaceat intervalsData are output to the USB-A interface (USB flashdrive)Power supply via the USB-B interfaceBatteries are not being charged10 ba75865e13 09/2011


Multi 3430Overview1.3 Socket field5 1 2 3 4Connectors:1 Digital sensors(pH, ORP, conductivity, D.O.)2 Power pack3 USB-A (host) interface4 USB B (device) interface5 Service interfaceCAUTIONOnly connect sensors to the meter that cannot return any voltagesor currents that are not allowed (> SELV and > current circuit withcurrent limiting).WTW IDS sensors and IDS adapters meet these requirements.ba75865e13 09/201111


Overview Multi 34301.4 Automatic sensor recognitionThe automatic sensor recognition for IDS sensors allows• to operate an IDS sensor at different meters without recalibration• to operate different IDS sensors at one meter without recalibration• to assign measurement data to an IDS sensor– Measurement datasets are always stored and output with thesensor name and sensor series number.• to assign calibration data to an IDS sensor– Calibration data and calibration history are always stored andoutput with the sensor name and sensor series number.• to activate the correct cell constant for conductivity sensors automatically• to hide menus automatically that do not concern this sensorTo be able to use the automatic sensor recognition, a meter that supportsthe automatic sensor recognition (e.g. Multi 3430) and a digitalIDS sensor are required.In digital IDS sensors, sensor data are stored that clearly identify thesensor.The sensor data are automatically taken over by the meter.1.5 IDS sensorsIDS sensors• support the automatic sensor recognition• show only the settings relevant to the specific sensor in the settingmenu• process signals in the sensor digitally so that precise and interference-freemeasurements are enabled even with long cables• facilitate to assign a sensor to a measured parameter with differentlycolored couplings• have quick-lock couplings with which to fix the sensors to the meter.NoteInformation on available IDS sensors is given on the Internet and inthe WTW catalog, "Laboratory and field instrumentation".12 ba75865e13 09/2011


Multi 3430OverviewSensor data from IDSsensorsIDS sensors transmit the following sensor data to the meter:• SENSOR ID– Sensor name– Sensor series number• Calibration data– Calibration date– Calibration characteristics– Calibration interval– Selected buffer set (IDS pH sensors only)– Cell constant (IDS conductivity sensors only)– Calibration history of the last 10 calibrations• Measurement settings (IDS conductivity sensors only)– The set measured parameter– The set reference temperature– The set temperature coefficient– The set TDS factorThe calibration data are updated in the IDS sensor after each calibrationprocedure. A message is displayed while the data are beingupdated in the sensor.NoteIn the measured value display, you can display the sensor name andseries number of the selected sensor with the [Info] softkey. You canthen display all further sensor data stored in the sensor with the [More]softkey.1.6 IDS adapter for analog sensorsWith the aid of an IDS adapter, you can also operate analog sensorson the Multi 3430. An IDS adapter and analog sensor together behavelike an IDS sensor.The measuring electronics with the stored adapter data are in theadapter head. The adapter data correspond to the sensor data.NoteInformation on available IDS adapters is given on the Internet and inthe WTW catalog, "Laboratory and field instrumentation".Detailed information on the IDS adapter is given in the operating manualof the adapter.ba75865e13 09/201113


Overview Multi 343014 ba75865e13 09/2011


Multi 3430Safety2 SafetyThis operating manual contains basic instructions that you must followduring the commissioning, operation and maintenance of the meter.Consequently, all responsible personnel must read this operating manualbefore working with the meter.The operating manual must always be available within thevicinity of the meter.Target groupThe meter was developed for work in the field and in the laboratory.Thus, we assume that, as a result of their professional training andexperience, the operators will know the necessary safety precautionsto take when handling chemicals.Safety instructionsSafety instructions in this operating manual are indicated by the warningsymbol (triangle) in the left column. The signal word (e.g. "Caution")indicates the level of danger:WARNINGindicates instructions that must be followed precisely in order toavoid possibly great dangers to personnel.CAUTIONindicates instructions that must be followed precisely in order toavoid the possibility of slight injuries or damage to the meter orthe environment.Further notesNoteindicates notes that draw your attention to special features.Noteindicates cross-references to other documents, e.g. operating manuals.ba75865e13 09/201115


Safety Multi 34302.1 Authorized useThe authorized use of the meter consists exclusively of the measurementof the pH, ORP, conductivity and dissolved oxygen in a field andlaboratory environment.The technical specifications as given in chapter 7 TECHNICAL DATA mustbe observed. Only the operation and running of the meter according tothe instructions given in this operating manual is authorized.Any other use is considered unauthorized.2.2 General safety instructionsThis meter is constructed and tested in compliance with the IEC 1010safety regulations for electronic measuring instruments.It left the factory in a safe and secure technical condition.Function andoperational safetyThe smooth functioning and operational safety of the meter can only beguaranteed if the generally applicable safety measures and the specificsafety instructions in this operating manual are followed during operation.The smooth functioning and operational safety of the meter can only beguaranteed under the environmental conditions that are specified inchapter 7 TECHNICAL DATA.If the meter was transported from a cold environment to a warm environment,the formation of condensate can lead to the faulty functioningof the meter. In this event, wait until the temperature of the meterreaches room temperature before putting the meter back into operation.CAUTIONThe meter is only allowed to be opened by authorized personnel.16 ba75865e13 09/2011


Multi 3430SafetySafe operationIf safe operation is no longer possible, the meter must be taken out ofservice and secured against inadvertent operation!Safe operation is no longer possible if the meter:• has been damaged in transport• has been stored under adverse conditions for a lengthy period oftime• is visibly damaged• no longer operates as described in this manual.If you are in any doubt, please contact the supplier of the meter.Obligations of thepurchaserThe purchaser of this meter must ensure that the following laws andguidelines are observed when using dangerous substances:• EEC directives for protective labor legislation• National protective labor legislation• Safety regulations• Safety datasheets of the chemical manufacturers.CAUTIONIn addition to the safety instructions mentioned here, also followthe safety instructions of the sensors used.The operating manuals of the sensors are available on the suppliedCD and on the Internet under www.WTW.com.ba75865e13 09/201117


Safety Multi 343018 ba75865e13 09/2011


Multi 3430Commissioning3 Commissioning3.1 Scope of delivery• Meter Multi 3430• 4 NiMH rechargeable batteries 1.2 V Mignon type AA• USB cable (A plug on mini B plug)• Power pack• Short instructions• Detailed operating manual (4 languages)• CD-ROM3.2 Power supplyThe Multi 3430 is supplied with power in the following ways:• Battery operation with NiMh rechargeable batteries• Mains operation with the supplied power pack.The NiMh rechargeable batteries are automatically charged whilethe power pack is connected.• USB operation via a connected USB-B cable.The inserted NiMh rechargeable batteries are not charged3.3 Initial commissioningPerform the following activities:• Insert the rechargeable batteries and charge them• Connect the power pack (mains operation / battery charging)• Switch on the meter• Set the date and time3.3.1 Inserting the rechargeable batteries1 Unscrew the two screws (1) on the underside of the meter.2 Open the battery compartment (2) on the underside of themeter.ba75865e13 09/201119


Commissioning Multi 3430123 Place four rechargeable batteries (type Mignon AA) in the batterycompartment.CAUTIONMake sure that the poles of the rechargeable batteries are positionedcorrectly.The ± signs on the batteries must correspond to the ± signs in thebattery compartment.4 Close the battery compartment (2) and tighten the screws (1).3.3.2 Connecting the power pack / charging the batteriesCAUTIONThe line voltage at the operating site must lie within the input voltagerange of the original power pack (see section 7.1).CAUTIONUse original power packs only (see section 7.1).CAUTIONThe batteries in the battery compartment are automaticallycharged when the power pack is connected.Make sure that only NiMH rechargeable batteries are in the batterycompartment. The charging process is optimized for NiMH rechargeablebatteries. Other battery types can cause damage duringthe charging process.20 ba75865e13 09/2011


Multi 3430CommissioningMake sure that the ambient temperature is max. 40 °C while thepower pack is connected.1 Connect the plug of the power pack to the socket for the powerpack on the Multi 3430.2 Connect the original power pack to an easily accessible poweroutlet.During mains operation, one of the following symbols is displayed:: Mains operation with charge functionBatteries are automatically charged in the background.: Mains operationNoteCharge the batteries completely prior to putting the meter into operationfor the first time. The charging process takes approx. 10 hours. Thesymbol is displayed if the batteries are nearly discharged.3.3.3 Switching on the meter1 Press the key.The meter performs a self-test.The display shows the manufacturer's logo while the self-testis being performed.2 Connect the sensor.The meter switches to the measuring mode (measured valuedisplay).NoteThe meter has an energy saving feature to avoid unnecessary powerconsumption during battery operation.The energy saving feature switches off the meter during battery operationif no key is pressed during the adjusted interval. (How to set theswitch-off interval, see section 4.4).The switch-off interval of the energy saving feature is not active whenthe meter is supplied with power via the power pack or the USB-Bcable.ba75865e13 09/201121


Commissioning Multi 34303.3.4 Setting the date and time3 See section 4.3.522 ba75865e13 09/2011


Multi 3430Operation4 Operation4.1 Switching on the meterSwitching onPress the key.The meter performs a self-test.The display shows the manufacturer's logo while the self-test is beingperformed.If a sensor is connected, the measured value display appears.Info30.09.2009 08:00Switching offPress the key.4.2 Login with a user nameAfter activation of the user administration by the administrator, measurementsare only possible after login with a user name. The username is documented with the measured values and in records.All user names entered by the administrator are listed in the User namemenu. The administrator determines for each user whether or not apassword is required for login to the meter.If the Password menu item is grayed out, no password is required forlogin.1 Switch on the meter with .The Login dialog box appears.ba75865e13 09/201123


Operation Multi 3430LoginUser nameAdminPassword ####Change password22.09.2009 08:002 Using , enter the Benutzername menu item and confirmwith .The user name is highlighted.3 Using , select a user name and confirm with .NoteThe login is done immediately if no password is required.If a sensor is connected the measured value display appears.4 If a password is required:Using , enter the Password menu item and confirmwith .NoteThe user specifies the password when he or she first logs in with a username.A valid password consists of 4 digits.The user can change the password with the next login.5 Change the digit of the highlighted position with .Go to the next digit of the password with .When the password was completely entered, confirm with.The login takes place. If a sensor is connected the measuredvalue display appears.24 ba75865e13 09/2011


Multi 3430OperationChanging the passwordIf the administrator has set up the access with password protection:1 Switch on the meter with .The Login dialog box appears.2 Using , enter the Benutzername menu item and confirmwith .The user name is highlighted.3 Using , select a user name and confirm with .4 Using , enter the Change password menu item andconfirm with .5 Enter the old password in the Password box with and and confirm with .6 Enter the new password in the New password box with and and confirm with .The password is changed.The login takes place. If a sensor is connected the measuredvalue display appears.Forgotten thepassword?Contact the administrator.ba75865e13 09/201125


Operation Multi 34304.3 General operating principlesThis section contains basic information on the operation of theMulti 3430.Operating elements,displayOperating modes,navigationAn overview of the operating elements and the display is given in section1.1 and section 1.2.An overview of the operating modes and navigation of the Multi 3430 isgiven in section 4.3.1 and section 4.3.3.4.3.1 Operating modesThe meter has the following operating modes:• MeasuringThe measurement data of the connected sensors is shown in themeasured value display• CalibrationThe course of a calibration with calibration information, functionsand settings is displayed• Storage in memoryThe meter stores measuring data automatically or manually• Data transmissionThe meter transmits measuring data and calibration records to aUSB-B interface automatically or manually.• SettingThe system menu or a sensor menu with submenus, settings andfunctions is displayed26 ba75865e13 09/2011


Multi 3430Operation4.3.2 Display of several sensors in measuring modeThe measured values of the connected sensors can be displayed in thefollowing ways:• Clear display of all connected sensors• Detailed display of one sensor(e.g. incl. CMC feature with pH sensors)With the softkey you can very easily switch between the two displaytypes. The suitable softkey is displayed, depending on the operatingsituation.Info 30.09.2009 08:00Info 30.09.2009 08:00ba75865e13 09/201127


Operation Multi 34304.3.3 NavigationMeasured value displayMenus and dialogsIn the measured value display, you can• use to select one of several connected sensors. Theselected sensor is displayed with a colored background.The following actions / menus refer to the selected sensor• open the menu for calibration and measurement settings with (short keystroke)• open the system menu with the sensor-independent settings bypressing Storage & config for a long keystroke, approx. 2 s).• change the display in the selected measuring window (e. g. pH >


Multi 3430OperationGeneralLanguage:DeutschAcoustic signal:OffVolume 9Illumination:OnBrightness: 12Switchoff time:1 hTemperature unit: °CStability control:On22.09.2009 08:00• FunctionsFunctions are designated by the name of the function. They areimmediately carried out by confirming with . Example:Display the Calibration record function.pHCalibration recordCalibration data storageBuffer:Single-point calibration:Calibration interval:Unit for slope:TECYes7 dmV/pH[i] 2.00 4.01 7.00 10.0122.09.2009 08:00MessagesInformation is marked by the [i] symbol. They cannot be selected.Example:pHCalibration recordCalibration data storageBuffer:Single-point calibration:Calibration interval:Unit for slope:TECYes7 dmV/pH[i] 2.00 4.01 7.00 10.0122.09.2009 08:00NoteThe principles of navigation are explained in the two following sectionsby reference of examples:• Setting the language (section 4.3.4)• Setting the date and time (see section 4.3.5).ba75865e13 09/201129


Operation Multi 34304.3.4 Example 1 on navigation: Setting the language1 Press the key.The measured value display appears.The instrument is in the measuring mode.Info30.09.2009 08:002 Open the Storage & config menu with .The instrument is in the setting mode.Storage & configSystemData storage22.09.2009 08:003 Select the System submenu with .The current selection is displayed with a frame.4 Open the System submenu with .30 ba75865e13 09/2011


Multi 3430OperationSystemGeneralInterfaceClock functionService informationReset22.09.2009 08:005 Select the General submenu with .The current selection is displayed with a frame.6 Open the General submenu with .GeneralLanguage:DeutschAcoustic signal:OffIllumination:OnKontrast: 50 %Switchoff time:1 h22.09.2009 08:007 Open the setting mode for the Language with .GeneralLanguage:DeutschAcoustic signal:OffIllumination:OnBrightness: 50 %Switchoff time:1 h22.09.2009 08:00ba75865e13 09/201131


Operation Multi 34308 Select the required language with .9 Confirm the setting with .The meter switches to the measuring mode.The selected language is active.4.3.5 Example 2 on navigation: Setting the date and timeThe measuring instrument has a clock with a date function. The dateand time are indicated in the status line of the measured value display.When storing measured values and calibrating, the current date andtime are automatically stored as well.The correct setting of the date and time and date format is important forthe following functions and displays:• Current date and time• Calibration date• Identification of stored measured values.Therefore, check the time at regular intervals.NoteAfter a fall of the supply voltage (empty batteries), the date and time arereset to 01.08.2009 00, 00:00 hours.Setting the date, timeand date formatThe date format can be switched from the display of day, month, year(dd.mm.yy) to the display of month, day, year (mm/dd/yy or mm.dd.yy).1 In the measured value display:Open the Storage & config menu with .The instrument is in the setting mode.2 Select and confirm the System / Clock function menu with and .The setting menu for the date and time opens up.32 ba75865e13 09/2011


Multi 3430OperationClock functionDate format:dd.mm.yyDate: 30.09.2009Time: 14:53:4022.09.2009 08:003 Select and confirm the Time menu with and .The hours are highlighted.4 Change and confirm the setting with and .The minutes are highlighted.5 Change and confirm the setting with and .The seconds are highlighted.6 Change and confirm the setting with and .The time is set.7 If necessary, set the Date and Date format. The setting is madesimilarly to that of the time.8 If necessary, select and set the Date with and.9 To make further settings, switch to the next higher menu levelwith .orSwitch to the measured value display with .The instrument is in the measuring mode.ba75865e13 09/201133


Operation Multi 34304.4 Sensor-independent settingsThe Storage & config menu includes the following settings:• System (see section 4.4.1).• Data storage (see section 4.4.2)4.4.1 SystemOverviewSettingsThe following sensor-independent meter characteristics can beadjusted in the Storage & config/System menu:• Menu language• Beep on keystroke• Loudness of the beep• Illumination• Brightness• Interval of the automatic switchoff• Data interface• Clock and date function• Reset of all sensor-independent system settings to the default conditionTo open the Storage & config menu, press the keyin the measured value display. After completing the settings, switch tothe measured value display with .Default settings are printed in bold.Menu item Setting DescriptionSystem / General / LanguageSystem /General /Acoustic signalDeutschEnglish(more)Beep 1Beep 2offSelects the menu languageSwitches on/off the beep onkeystrokeSystem / General / Volume 0 ... 5 ... 10 Changes the loudness of thebeepSystem / General / IlluminationAutoonSwitches the display illuminationon/offSystem / General / Brightness 0 ... 10 ... 22 Changes the display brightnessSystem / General / Switchoff time 10 min ... 1h ... 24 h Adjusts the switch-off time34 ba75865e13 09/2011


Multi 3430OperationMenu item Setting DescriptionSystem / General / TemperatureunitSystem / General / Stability controlSystem / Interface / USB Host°C°FonoffonoffTemperature unit,degrees Celsius or degreesFahrenheit.All temperatures are displayedwith the selected unit.Switches on or off the automaticstability control duringmeasurement (see section4.4.3)Switches on or off the USBHost interface.You can switch off the powersupply of the USB Host interfaceto extend the operatingtime of the batteries.The USB Host interface has tobe switched on in order totransfer data to a USB memorydevice.System / Interface / Baud rate 1200, 2400, 4800,9600, 19200Baud rate of the USB DeviceinterfaceSystem / Interface / Output formatSystem / Interface / Decimal separatorSystem / Interface / Output headerSystem /Clock functionSystem /Service informationASCIICSVDot (xx.x)Comma (xx,x)Date formatDateTimeOutput format for data transmissionFor details, see section 4.12Decimal separatorOutput of a header for Outputformat: CSVSettings of time and date.For details, see section 4.3.5Hardware version and softwareversion of the meter are displayed.System /Reset - Resets the system settings tothe default values.For details, see section 4.13.2ba75865e13 09/201135


Operation Multi 34304.4.2 Data storageThis menu contains all functions to display, edit and erase stored measuredvalues.NoteDetailed information on the storage functions of the Multi 3430 is givenin section 4.11.4.4.3 Automatic Stability controlThe automatic Stability control (AutoRead) function continuouslychecks the stability of the measurement signal. The stability has a considerableimpact on the reproducibility of measured values.You can activate or switch off the automatic Stability control function(see section 4.4).The measured parameter flashes on the display• as soon as the measured value is outside the stability range• when you switch over between the measured parameters with .• when the automatic Stability control is switched off.4.4.4 Automatic switch-offThe instrument has an automatic switchoff function in order to save thebatteries (see section 4.4.1). The automatic switchoff switches off themeasuring instrument if no key is pressed for an adjustable period.The automatic switchoff is not active• if the power pack is connected• if a USB-B cable is connected• if the Automatic data storage function is active, or with automaticdata transmission4.4.5 Display illuminationThe meter automatically switches the display illumination to energysaving mode if no key is pressed for 20 seconds.After a further 60 seconds, the meter switches off the display illuminationcompletely.The illumination is switched on with the next keystroke again.You can also generally switch on the display illumination (see section4.4.1).36 ba75865e13 09/2011


Multi 3430Operation4.5 Sensor infoYou can display the current sensor data and sensor settings of a connectedsensor at any time. The sensor data are available in the measuredvalue display with the [Info] softkey.Info30.09.2009 08:001 In the measured value display:Display the sensor data (sensor name, series number) with[Info].More30.09.2009 08:00SenTix 940B0925000132 Display further sensor data (settings) with [More].ba75865e13 09/201137


Operation Multi 3430SenTix 940B092500013Man. temperature: 25 °CpH resolution 0.001mV resolution 0.1BufferTECCalibration interval7dUnit for slopemV/pHQSC:30.09.2009 08:004.6 Channel displayThe Multi 3430 manages the connected sensors and displays whichsensor is plugged to which connection.Channel displayDisplay of the plug positionfor the respective parameterThe red bar indicates foreach connected sensor towhich plug position of themeter it is connected.Info30.09.2009 08:0038 ba75865e13 09/2011


Multi 3430Operation4.7 pH value4.7.1 General informationYou can measure the following parameters:• pH value [ ]• Sensor voltage [mV]NoteThe sensor connection and the USB-B (device) interface are galvanicallyisolated. This facilitates interference-free measurements also inthe following cases:• Measurement in grounded test samples• Measurement in one test sample with several sensors connected toone Multi 3430TemperaturemeasurementFor reproducible pH measurements, it is essential to measure the temperatureof the test sample. IDS sensors measure the temperature witha temperature sensor integrated in the IDS sensor.When operating a sensor without integrated temperature sensor, e.g.via an IDS pH adapter, you have the following options to determine thetemperature of the measuring solution:• Temperature measurement via the integrated temperature sensor ofan IDS sensor.When the measured temperature value is taken from an IDS sensorthe [TP ↑ ] status indicator is displayed in the measuring window ofthe IDS pH adapter. In the measuring window of the IDS sensor providingthe measured temperature value the [TP ↓ ] status indicator isdisplayed.• Manual determination and input of the measured temperature value.NoteThe settings for the temperature can be adjusted in the menu for calibrationand measurement settings (siehe section 4.7.3).Preparatory activitiesPerform the following preparatory activities when you want to measure:1 Connect the IDS pH sensor to the meter.The pH measuring window is displayed.2 If necessary, select the measured parameter with .3 If necessary, calibrate or check the IDS pH sensor.ba75865e13 09/201139


Operation Multi 34304.7.2 Measuring the pH value1 Perform the preparatory activities according to section 4.7.1.2 Immerse the IDS pH sensor in the test sample.Info30.09.2009 08:003 Select the pH or mV display with .Stability control(AutoRead )The stability control function (AutoRead) continually checks the stabilityof the measurement signal. The stability has a considerable impact onthe reproducibility of measured values. The display of the measuredparameter flashes until a stable measured value is available.You can start the Stability control manually at any time, irrespective ofthe setting for automatic Stability control (see section 4.4.3) in the Systemmenu.1 Freeze the measured value with .The [HOLD] status indicator is displayed.2 Using , activate the Stability control functionmanually.The [AR] status indicator appears while the measured value isassessed as not stable. A progress bar is displayed and thedisplay of the measured parameter flashes.The [HOLD][AR] status indicator appears as soon as a stablemeasured value is recognized. The progress bar disappearsand the display of the measured parameter stops flashing.The current measurement data is output to the interface.Measurement data meeting the stability control criterion is markedby AR.40 ba75865e13 09/2011


Multi 3430OperationNoteYou can prematurely terminate the Stability control function manuallywith at any time. If the Stability control function is prematurelyterminated, the current measurement data are output to theinterface without the AutoRead info.3 Release the frozen measured value again with or .The [AR] status display disappears. The display switches backto the previous indication.Criteria for a stablemeasured valueThe Stability control function checks whether the measured values arestable within the monitored time interval.MeasuredparameterTime intervalStability in the time intervalpH value 15 seconds ? pH: Better than 0.01Temperature 15 seconds ? T (° C): Better than 0.02The minimum duration until a measured value is assessed as stable isthe monitored time interval. The actual duration is mostly longer.ba75865e13 09/201141


Operation Multi 34304.7.3 Settings for pH measurementsOverviewSettingsThe following settings are possible for pH measurements:• Calibration record (display)• Calibration data storage (display)• Calibration interval• Buffers for calibration• Single-point calibration• Unit for slope• ResolutionThe settings are made in the menu for calibration and measurementsettings of the pH/ORP measurement. To open the settings, display therequired parameter in the measured value display and press the key. After completing the settings, switch to the measuredvalue display with .Default settings are printed in bold.Menu item Possible setting DescriptionCalibration /Calibration record - Displays the calibration record of the last calibrationCalibration /Calibration datastorageCalibration / Calibration datastorage / Copy to USB flashdriveCalibration / Calibration datastorage / Output to RS232/USB- Displays the last calibration records (max.10)- Outputs the calibration data storage to a connectedUSB flash drive- Outputs the calibration data storage to theinterfaceCalibration /BufferCalibration /Single-point calibrationTECNIST/DINConCal...yesnoBuffer sets to be used for pH calibration.For further buffers and details, see section4.7.4.Quick calibration with 1 bufferCalibration /Calibration interval 1 ... 7 ... 999 d Calibration interval for the IDS pH sensor (indays).The meter reminds you to calibrate regularlyby the flashing sensor symbol in the measuringwindow.42 ba75865e13 09/2011


Multi 3430OperationMenu item Possible setting DescriptionCalibration /Unit for slopemV/pH%Unit of the slope.The % display refers to the Nernst slope of-59.2 mV/pH (100 x determined slope/Nernstslope).QSC /First calibration - Starts the initial calibration with QSC buffers.This menu item is only available as long asno initial calibration was carried out with theconnected IDS sensor.QSC /Record of first calibration - Displays the calibration record of the QSCinitial calibrationQSC /Control calibration - Starts the control calibration with QSC buffers.This menu item is only available if an initialcalibration was carried out with the connectedIDS sensor.Man. temperature -25 ... +25 ...+130 °CEntry of the manually determined temperatureThis menu item is only available if an IDSadapter and is connected.Alternative temperatureonoffTakes the measured temperature value froman IDS sensor.This menu item is only available if an IDSadapter and an IDS sensor with temperaturesensor are connected.Temperature from channel ?????????pH resolution 0.0010.010.1mV resolution 0.11Selects the channel (sensor), that providesthe measured temperature value.This menu item is only available if an IDSadapter and two IDS sensors with temperaturesensor are connected.Resolution of the pH displayResolution of the mV displayReset - Resets all sensor settings to the delivery condition(see section 4.13.1)ba75865e13 09/201143


Operation Multi 34304.7.4 pH calibrationWhy calibrate?When do you have tocalibrate?Buffer sets forcalibrationDuring the operation of an IDS pH sensor, the zero point (asymmetry)andslope of the sensor change with time.As a result, an inexact measuredvalue is displayed. Calibration determines the current values of thezero point and slope of the pH sensor and stores them in the measuringinstrument.Thus, you should calibrate at regular intervals.• When the calibration interval has expiredYou can use the buffer sets quoted in the table for an automatic calibration.The pH values are valid for the specified temperature values. Thetemperature dependence of the pH values is taken into considerationduring the calibration.No. Buffer set* pH values at1 ConCal Any Any2 NIST/DINDIN buffers according to DIN 19266and NIST Traceable Buffers1,6794,0066,8659,18012,45425 °C3 TECWTW Technical buffers2,0004,0107,00010,01125 °C4 Merck 1* 4,0007,0009,0005 Merck 2 * 1,0006,0008,00013,0006 Merck 3 * 4,6606,8809,2207 Merck 4 * 2,0004,0007,00010,00020 °C20 °C20 °C20 °C44 ba75865e13 09/2011


Multi 3430OperationNo. Buffer set* pH values at8 Merck 5 * 4,0107,00010,0009 DIN 19267 1,0904,6506,7909,23010 Mettler Toledo USA * 1,6794,0037,00210,01311 Mettler Toledo EU * 1,9954,0057,0029,20812 Fisher * 2,0074,0027,00410,00213 Fluka BS * 4,0066,9848,95714 Radiometer * 1,6784,0057,0009,18015 Baker * 4,0066,99110,00816 Metrohm * 3,9967,0038,99917 Beckman * 4,0057,00510,01318 Hamilton Duracal * 4,0057,00210,01319 Precisa * 3,9967,0038,99925 °C25 °C25 °C25 °C25 °C25 °C25 °C25 °C25 °C25 °C25 °C25 °Cba75865e13 09/201145


Operation Multi 3430No. Buffer set* pH values at20 Reagecon TEC * 2,0004,0107,00010,00021 Reagecon 20 * 2,0004,0007,00010,00013,00022 Reagecon 25 * 2,0004,0007,00010,00013,00023 Chemsolute * 2,0004,0007,00010,00024 USABlueBook * 4,0007,00010,00025 °C20 °C25 °C20 °C25 °C* Brand names or trade names are trademarks of their respectiveowners protected by law.NoteThe buffers are selected in the menu, pH / / Calibration/ Buffer (see section 4.7.3).46 ba75865e13 09/2011


Multi 3430OperationCalibration pointsCalibration can be performed using one to five buffer solutions in anyorder (single-point to five-point calibration). The meter determines thefollowing values and calculates the calibration line as follows:DeterminedvaluesDisplayed calibration data1-point Asy • Zero point = Asy• Slope = Nernst slope(-59.2 mV/pH at 25 °C)2-point3-point to5-pointAsySlp.AsySlp.• Zero point = Asy• Slope = Slp.• Zero point = Asy• Slope = Slp.The calibration line is calculatedby linear regression.NoteYou can display the slope in the units, mV/pH or % (see section 4.7.3).Stability controlCalibration recordDisplay calibration dataand output to interfaceThe calibration procedure automatically activates the stability controlfunction. The current measurement with stability control can be terminatedat any time (accepting the current value).The new calibration values are displayed when a calibration procedureis completed.You can have the data of the last calibration displayed (see section4.7.8). Subsequently, you can transmit the displayed calibration data tothe interface, e. g. to a PC, with the key.NoteThe calibration record is automatically transmitted to the interface aftercalibrating.ba75865e13 09/201147


Operation Multi 3430Sample recordMulti 3430Ser. no. 09250023CALIBRATION pHCalibration date 31.07.2009 16:13:33SenTix 940Ser. no. B092500013TECBuffer 1 4.01Buffer 2 7.00Buffer 3 10.01Voltage 1 184.0 mV 24.0 °CVoltage 2 3.0 mV 24.0 °CVoltage 3 -177.0 mV 24.0 °CSlope-60.2 mV/pHAsymmetry 4.0 mVSensor +++etc...Calibration evaluationAfter calibrating, the meter automatically evaluates the calibration. Thezero point and slope are evaluated separately. The worse evaluation ofboth is taken into account. The evaluation appears on the display andin the calibration record.DisplayCalibrationrecordZero point[mV]Slope[mV/pH]+++ -15 ... +15 -60.5 ... -58++ -20 ... +20 -58 ... -57+ -25 ... +25 -61 ... -60.5or-57 ... -56- -30 ... +30 -62 ... -61or-56 ... -50Clean the IDS sensor according to thesensor operating manualErrorError< -30 or> 30... -62 or... -50Eliminate the error according to chapter6 WHAT TO DO IF...NoteFor pH IDS sensors, you can optionally enable a more finely gradedcalibration evaluation (QSC) (see section 4.7.10).48 ba75865e13 09/2011


Multi 3430OperationPreparatory activitiesPerform the following preparatory activities when you want to calibrate:1 Connect the IDS pH sensor to the meter.The pH measuring window is displayed.2 Keep the buffer solutions ready.4.7.5 Calibration intervalThe calibration evaluation is displayed as a sensor symbol.After the QSC function has been enabled the sensor symbol isreplaced by the QSC color scale (see section 4.7.10).After the specified calibration interval has expired, the sensor symbolor the QSC color scale flashes. It is still possible to measure.NoteTo ensure the high measuring accuracy of the measuring system, calibrateafter the calibration interval has expired.Setting the calibrationintervalThe calibration interval is set to 7 days (d7) in the factory.You can change the interval (1 ... 999 days):1 Open the menu for measurement settings with .2 In the Calibration / Calibration interval menu, set the calibrationinterval with .3 Confirm the setting with .4 Quit the menu with .ba75865e13 09/201149


Operation Multi 34304.7.6 Carrying out an automatic calibration (AutoCal)Make sure that in the sensor menu, Buffer menu, the buffer set is correctlyselected (see section 4.7.3).Use any one to five buffer solutions of the selected buffer set in ascendingor descending order.Below, calibration with Technical buffers (TEC) is described. Whenother buffer sets are used, other nominal buffer values are displayed.Apart from that, the procedure is identical.NoteIf single-point calibration was set in the menu, the calibration procedureis automatically finished with the measurement of buffer solution 1 andthe calibration record is displayed.1 In the measured value display, select the measured parameterpH or mV with .2 Start the calibration with .The calibration display for the first buffer appears (voltage display).30.09.2009 08:003 Thoroughly rinse the IDS sensor with deionized water.4 Immerse the IDS pH sensor in buffer solution 1.5 For measurements without temperature sensor(e.g. when using an IDS adapter):Measure the temperature of the buffer manually and enter itwith .6 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.50 ba75865e13 09/2011


Multi 3430Operation30.09.2009 08:007 Wait for the end of the measurement with stability control oraccept the calibration value with .The calibration display for the next buffer appears (voltage display).8 If necessary, finish the calibration procedure as a single-pointcalibration with .The calibration record is displayed.NoteFor single-point calibration, the instrument uses the Nernst slope(-59.2 mV/pH at 25 °C) and determines the zero point of the IDS pHsensor.ba75865e13 09/201151


Operation Multi 3430Continuing with twopointcalibration9 Thoroughly rinse the IDS pH sensor with deionized water.10 Immerse the IDS pH sensor in buffer solution 2.11 When measuring without temperature sensor:Measure the temperature of the buffer manually and enter itwith .12 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.30.09.2009 08:0013 Wait for the measurement with stability control to be completedor terminate the stability control and take over the calibrationvalue with .The calibration display for the next buffer appears (voltage display).14 If necessary, finish the calibration procedure as a two-pointcalibration with .The calibration record is displayed.52 ba75865e13 09/2011


Multi 3430OperationContinuing with threetofive-point calibration15 Thoroughly rinse the IDS pH sensor with deionized water.16 Immerse the IDS pH sensor in the next buffer solution.17 When measuring without temperature sensor:Measure the temperature of the buffer manually and enter itwith .18 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.30.09.2009 08:0019 Wait for the measurement with stability control to be completedor terminate the stability control and take over the calibrationvalue with .The calibration display for the next buffer appears (voltage display).20 If necessary, use to finish the calibration.The calibration record is displayed.orSwitch to calibration with the next buffer with .NoteCalibration is automatically completed after the last buffer of a bufferset has been measured. Then the calibration record is displayed.The calibration line is determined by linear regression.ba75865e13 09/201153


Operation Multi 34304.7.7 Carrying out a manual calibration (ConCal)Make sure that in the sensor menu, Buffer menu, the ConCal buffer setis correctly selected (see section 4.7.3).Use any one to five buffer solutions in ascending or descending order.NoteIf single-point calibration was set in the menu, the calibration procedureis automatically finished with the measurement of buffer solution 1 andthe calibration record is displayed.1 In the measured value display, select the measured parameterpH or mV with .2 Start the calibration with .The calibration display for the first buffer appears (voltage display).30.09.2010 08:003 Thoroughly rinse the IDS sensor with deionized water.4 Immerse the IDS pH sensor in buffer solution 1.5 For measurements without temperature sensor(e.g. when using an IDS adapter):Measure the temperature of the buffer manually and enter itwith .6 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.54 ba75865e13 09/2011


Multi 3430Operation30.09.2010 08:007 Wait for the measurement with stability control to be completedor terminate the stability control and take over the calibrationvalue with .The pH value of the buffer solution is displayed.30.09.2010 08:008 Set the nominal buffer value for the measured temperature with.9 Accept the calibration value with .The calibration display for the next buffer appears (voltage display).10 If necessary, finish the calibration procedure as a single-pointcalibration with .The calibration record is displayed.NoteFor single-point calibration, the instrument uses the Nernst slope(-59.2 mV/pH at 25 °C) and determines the zero point of the IDS pHsensor.ba75865e13 09/201155


Operation Multi 3430Continuing with twopointcalibration11 Thoroughly rinse the IDS sensor with deionized water.12 Immerse the IDS pH sensor in buffer solution 2.13 When measuring without temperature sensor:Measure the temperature of the buffer manually and enter itwith .14 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.15 Wait for the measurement with stability control to be completedor terminate the stability control and take over the calibrationvalue with .The pH value of the buffer solution is displayed.30.09.2010 08:0016 Set the nominal buffer value for the measured temperature with.17 Accept the calibration value with .The calibration display for the next buffer appears (voltage display).18 If necessary, finish the calibration procedure as a two-pointcalibration with .The calibration record is displayed.56 ba75865e13 09/2011


Multi 3430OperationContinuing with threetofive-point calibration19 Thoroughly rinse the IDS pH sensor with deionized water.20 Immerse the IDS pH sensor in the next buffer solution.21 When measuring without temperature sensor:Measure the temperature of the buffer manually and enter itwith .22 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.23 Wait for the measurement with stability control to be completedor terminate the stability control and take over the calibrationvalue with .The pH value of the buffer solution is displayed.30.09.2010 08:0024 Set the nominal buffer value for the measured temperature with.25 Accept the calibration value with .The calibration display for the next buffer appears (voltage display).26 If necessary, use to finish the calibration.The calibration record is displayed.orContinue calibrating using the next buffer with .NoteAfter the fifth buffer has been measured the calibration is automaticallyfinished. Then the calibration record is displayed.The calibration line is determined by linear regression.ba75865e13 09/201157


Operation Multi 34304.7.8 Displaying calibration recordsDisplaying thecalibration recordThe calibration data can be displayed and then output to the interface.The calibration record of the last calibration is to be found under themenu item, Calibration / Calibration record. To open it in the measuredvalue display, press the key.The calibration records of the last 10 calibrations are to be found in themenu, Calibration / Calibration data storage / Display. To open the Calibrationmenu, press the key in the measured valuedisplay.Menu itemSetting/functionDescriptionCalibration /Calibration data storage/ DisplayCalibration /Calibration data storage/ Copy to USBflash driveCalibration /Calibration data storage/ Output toRS232/USB- Displays the calibrationrecords.Further options:• Scroll through the calibrationrecords with.• Output the displayed calibrationrecord to the interfacewith .• Output all calibrationrecords to the interfacewith .• Quit the display with or .• Switch directly to the measuredvalue display with.- Outputs the calibration datastorage to a connected USBflash drive- Outputs the calibration datastorage to the interface58 ba75865e13 09/2011


Multi 3430Operation4.7.9 Continuous measurement control (CMC function)The Continuous Measurement Control (CMC function) facilitates toevaluate the current measured value instantly and definitely.After each successful calibration the scale of the pH measuring rangeis displayed in the measured value display. Here you can very clearlysee whether or not the current measured value is in the calibrated partof the measuring range.The following information is displayed:1234Info30.09.2009 08:001 Measuring range for which a valid calibration is available (backgroundcolor). Measured values in this range are suitable fordocumentation.2 Measuring range for which no valid calibration is available (lightgray). Measured values in this range are not suitable for documentation.Calibrate the meter with buffers covering this measuringrange.If the current measured value is not in the calibrated range, thecolor of this range changes to dark gray.If a measured value is outside the measuring range pH 0 - 14,overflow arrows are displayed at the left or right edge of themeasuring range.3 Currently measured pH value (needle)4 Marking lines for all nominal buffer values used with the last validcalibrationThe limits of the calibrated range are determined by the buffers usedfor calibration:Lower limit: Buffer with lowest pH value - 2 pH unitsUpper limit: Buffer with highest pH value + 2 pH unitsba75865e13 09/201159


Operation Multi 34304.7.10 QSC function (sensor quality control)General informationon the QSC functionThe QSC function (Quality Sensor Control) is a new sensor evaluationfor digital IDS sensors. It evaluates the condition of an IDS pH sensorindividually and with a very fine grading.On the display, the QSC color scale (from green to yellow) indicates thecurrent sensor evaluation by means of a pointer.QSC color scaleInfo22.09.2009 08:00The double arrow onthe color scale indicatesthe current sensorevaluation.In the printout, the sensor evaluation is quoted as a percentage(1-100).The finely graded sensor evaluation of the QSC function promptly callsyour attention to changes of the sensor.Thus you can do what is necessary to restore the optimum measuringquality (e.g. clean, calibrate or replace the sensor).Sensor evaluationwith / withoutQSC functionWith QSC functionVery fine grading of the sensorevaluation (100 grades)The reference value is individuallydetermined for each sensorduring the QSC initialcalibration.Low tolerances for zero pointand slope when using QSC buffersolutionsAdditional QSC calibrationrequired (with special QSC bufferset)Without QSC function (sensorsymbol)Rough grading of the sensor evaluation(4 grades)A theoretical reference value isused for all sensorsGreater tolerances for zero pointand slope when using commercialbuffer setsNo additional calibration required60 ba75865e13 09/2011


Multi 3430OperationQSC calibrationThe QSC function is enabled by once carrying out an additional threepointcalibration with special QSC buffer solutions. It covers the measuringrange of the sensor from pH 2 to pH 11. The QSC initial calibrationdetermines the actual condition of the sensor and stores it as areference in the sensor.To meet the high requirements of a QSC initial calibration, the QSC initialcalibration should optimally be carried out with the initial commissioningof the sensor.Carry out the normal calibrations for your special measuring range withyour usual standard solutions as previously done.NoteAs soon as the QSC function was enabled for an IDS sensor, it is notpossible to return to the sensor evaluation with the sensor symbol forthis sensor.Carrying out a QSCinitial calibration1 Open the menu for measurement settings with .2 In the QSC menu, select First calibration with .The calibration display appears. AutoCal QSC-Kit is displayedas the buffer.Exclusively use the QSC-Kit for the QSC calibration. If you useother buffers, you will have no valid QSC calibration.22.09.2009 08:003 Calibration with the buffers of the QSC-Kit is done like a normalthree-point calibration.Follow the user guide.NoteCarry out the QSC initial calibration very carefully. It determines the referencevalue for the sensor. This reference value cannot be overwrittenor reset.As soon as the QSC function was enabled, it is not possible to return tothe sensor evaluation with the sensor symbol.ba75865e13 09/201161


Operation Multi 34304 As soon as the three-point calibration has been successfullycarried out you can decide whether to accept or discard thecalibration as the QSC initial calibration.The QSC initial calibration is completed. The sensor is calibrated. If youwant to calibrate with special buffers for your measurements, you cansubsequently carry out a normal calibration with your buffers. The referencevalues determined with the QSC calibration are also used forthe evaluation of normal calibrations. In the measured value display,the color scale of the QSC function is always displayed. A double arrowon the color scale indicates the current sensor evaluation.QSC color scaleInfo22.09.2009 08:00The double arrow onthe color scale indicatesthe current sensorevaluation.You can carry out QSC control calibrations at greater intervals thannormal calibrations.A QSC control calibration can, e.g. be useful if the sensor evaluationnoticeably changed (after some normal calibrations).Carrying out a QSCcontrol calibration1 Open the menu for measurement settings with .2 In the QSC menu, select Control calibration with .The calibration display appears. AutoCal QSC-Kit is displayedas the buffer.Exclusively use the QSC-Kit for the QSC calibration. If you useother buffers, you will have no valid QSC control calibration.3 Follow the user guide.The calibration is carried out like a normal three-point calibration.As soon as the three-point calibration has been successfullycarried out you can decide whether to accept ordiscard the calibration as the QSC control calibration.62 ba75865e13 09/2011


Multi 3430Operation4.8 ORP voltage4.8.1 General informationYou can measure the following parameters:• ORP [mV]NoteThe sensor connection and the USB-B (device) interface are galvanicallyisolated. This facilitates interference-free measurements also inthe following cases:• Measurement in grounded test samples• Measurement with several sensors connected to one Multi 3430 inone test samplePreparatory activitiesPerform the following preparatory activities when you want to measure:1 Connect the IDS ORP sensor to the meter.The ORP measuring window is displayed.2 Check the meter with the IDS ORP sensor.4.8.2 Measuring the ORPNoteIDS ORP sensors are not calibrated. However, you can check IDSORP sensors using a test solution.1 Perform the preparatory activities according to section 4.7.1.2 Immerse the IDS ORP sensor in the test sample.Info30.09.2009 08:00ba75865e13 09/201163


Operation Multi 34303 Select the mV display with .Stability control(AutoRead )The stability control function (AutoRead) continually checks the stabilityof the measurement signal. The stability has a considerable impact onthe reproducibility of measured values. The display of the measuredparameter flashes until a stable measured value is available.You can start the Stability control manually at any time, irrespective ofthe setting for automatic Stability control (see section 4.4.3) in the Systemmenu.1 Freeze the measured value with .The [HOLD] status indicator is displayed.2 Using , activate the Stability control functionmanually.The [AR] status indicator appears while the measured value isassessed as not stable. A progress bar is displayed and thedisplay of the measured parameter flashes.The [HOLD][AR] status indicator appears as soon as a stablemeasured value is recognized. The progress bar disappearsand the display of the measured parameter stops flashing.The current measurement data is output to the interface.Measurement data meeting the stability control criterion is markedby AR.NoteYou can prematurely terminate the Stability control function manuallywith at any time. If the Stability control function is prematurelyterminated, the current measurement data are output to theinterface without the AutoRead info.3 Release the frozen measured value again with or .The [AR] status display disappears. The display switches backto the previous indication.Criteria for a stablemeasured valueThe Stability control function checks whether the measured values arestable within the monitored time interval.Measured parameterTime intervalStability in the time intervalORP voltage 15 seconds ? mV: Better than 0.3The minimum duration until a measured value is assessed as stable isthe monitored time interval. The actual duration is mostly longer.64 ba75865e13 09/2011


Multi 3430Operation4.8.3 Settings for ORP measurementsOverviewSettingsThe following settings are possible for ORP measurements:• Resolution• Automatic stability controlThe settings are made in the menu for measuring settings of the ORPmeasurement. To open the settings, display the required parameter inthe measured value display and press the key. Aftercompleting the settings, switch to the measured value display with.Default settings are printed in bold.Menu itemPossible settingDescriptionmV resolution 0.11Resolution of the mV displayReset - Resets all sensor settings tothe delivery condition (seesection 4.13.1)ba75865e13 09/201165


Operation Multi 34304.9 Dissolved oxygen4.9.1 General informationYou can measure the following parameters:• D.O. concentration• D.O. saturation index ("D.O. saturation")• D.O. partial pressureNoteThe sensor connection and the USB-B (device) interface are galvanicallyisolated. This facilitates interference-free measurements also inthe following cases:• Measurement in grounded test samples• Measurement in one test sample with several sensors connected toone Multi 3430TemperaturemeasurementPreparatory activitiesIDS D.O. sensors measure the temperature with a temperature sensorintegrated in the IDS sensor.Perform the following preparatory activities when you want to measure:1 Connect the D.O. sensor to the meter.The D.O. measuring window is displayed.2 Check or calibrate the meter with the sensor.NoteThe FDO ® 925 needs to be calibrated in special cases only. RegularFDO ® Checks are sufficient.66 ba75865e13 09/2011


Multi 3430Operation4.9.2 Measuring1 Perform the preparatory activities according to section 4.10.1.2 Immerse the D.O. sensor in the test sample.Info30.09.2009 08:00Selecting thedisplayedmeasured parameterSalinity correctionYou can switch between the following displays with :• D.O. concentration [mg/l]• D.O. saturation [%]• D.O. partial pressure [mbar].When measuring the concentration of solutions with a salt content ofmore than 1 g/l, a salinity correction is required.You have the following options to determine the salinity of solution:• Salinity measurement via an IDS conductivity sensor.When the measured salinity value is taken from an IDS conductivitysensor, the [Sal ↑ ] status indicator is displayed in the measuring windowof the D.O. sensor. In the measuring window of the IDS conductivitysensor providing the measured salinity value the [Sal ↓ ] statusindicator is displayed.• Manual determination and input of the salinity.NoteYou can switch the salinity correction on or off and enter the salinity inthe menu for calibration and measurement settings (see section4.10.4).Freezing the measuredvalue (HOLD function)With the HOLD function, you can freeze the current measured value.The displayed measured value stops changing until you switch theHOLD function off.1 Freeze the measured value with .The [HOLD] status indicator is displayed.ba75865e13 09/201167


Operation Multi 3430NoteIf the HOLD function is active, you can, e.g. start a manual measurementwith stability control.2 Release the frozen measured value again with .The HOLD function is switched off.The [HOLD] status display disappears.Stability control(AutoRead )The stability control function (AutoRead) continually checks the stabilityof the measurement signal. The stability has a considerable impact onthe reproducibility of measured values. The display of the measuredparameter flashes until a stable measured value is available.You can start a measurement with Stability control manually at anytime, irrespective of the setting for automatic Stability control (see section4.4.3) in the System menu.1 Freeze the measured value with .The [HOLD] status indicator is displayed.2 Using , activate the Stability control functionmanually.The [AR] status indicator appears while the measured value isassessed as not stable. A progress bar is displayed and thedisplay of the measured parameter flashes.The [HOLD][AR] status indicator appears as soon as a stablemeasured value is recognized. The progress bar disappearsand the display of the measured parameter stops flashing.The current measurement data is output to the interface.Measurement data meeting the stability control criterion is markedby AR.NoteYou can prematurely terminate the Stability control function manuallywith at any time. If the Stability control function is prematurelyterminated, the current measurement data are not output tothe interface.3 Using , start a further measurement withStability control.orRelease the frozen measured value again with .The display switches to the measured value display.The [AR][HOLD] status display disappears.68 ba75865e13 09/2011


Multi 3430OperationCriteria for a stablemeasured valueThe Stability control function checks whether the measured values arestable within the monitored time interval.MeasuredparameterTime intervalStability in the time intervalD.O. concentration20 seconds ? : better than 0.03 mg/lD.O. saturation 20 seconds ? : better than 0.4 %D.O. partialpressure20 seconds ? : Better than 0.8 mbarThe minimum duration until a measured value is assessed as stable isthe monitored time interval. The actual duration is mostly longer.ba75865e13 09/201169


Operation Multi 34304.9.3 Settings for D.O. sensors(menu or measurement and calibration settings)OverviewThe following settings are possible for D.O. sensors:• Calibration record (display)• Calibration data storage (display)• Calibration interval• FDO Check• Check interval• Salinity correction• Salinity (salinity equivalent)SettingsThe settings are available in the menu for measurement and calibrationsettings. To open the settings, display the required parameter in themeasured value display and press the key. Aftercompleting the settings, switch to the measured value display with.Menu itemPossiblesettingDescriptionCalibration /CalibrationrecordCalibration /CalibrationdatastorageCalibration /Calibration datastorage / Copy toUSB flash driveCalibration /Calibration datastorage / Outputto RS232/USB- Displays the calibration record of thelast calibration- Displays the last calibration records(max. 10)- Outputs the calibration data storage toa connected USB flash drive- Outputs the calibration data storage tothe interfaceCalibration /Calibrationinterval1 ... 180... 999 dCalibration interval for the D.O. sensor(in days).The meter reminds you to calibrateregularly by the flashing sensor symbolin the measuring window.FDO Check /Start FDOCheck- Starts the FDO ® Check.70 ba75865e13 09/2011


Multi 3430OperationMenu itemFDO Check /Check intervalSal automaticSalinity fromchannelSal correctionPossiblesetting1 ... 60 ...999 donoff?????????onoffDescriptionInterval for the FDO Check (in days).The FDO Check status display indicatorin the measuring window remindsyou to check the sensor regularly.Automatic salt content correction forconcentration measurements. Thesalinity value is taken from an IDSconductivity sensor.This menu item is only available if anIDS conductivity sensor is connected.Selects the channel (sensor), providingthe salinity value.This menu item is only available if twoIDS conductivity sensors are connected.Manual salt content correction for concentrationmeasurementsSalinity 0.0 ...70.0Salinity or salinity equivalent for thesalt content correction.This function is only available for concentrationmeasurements if themanual salt content correction is switchedon.Response timet9030 ... 300 Response time of the signal filter (inseconds).A signal filter in the sensor reduces thefluctuation range of the measuredvalue. The signal filter is characterizedby the response time t90. This is thetime after which 90 % of a signalchange is displayed.This menu item is only available if sensorand meter support this function.Firmware updates for the IDS sensorand the meter are provided on theinternet (see chapter 9).Reset - Resets all sensor settings to the deliverycondition (see section 4.13.1)ba75865e13 09/201171


Operation Multi 34304.9.4 FDO ® Check procedure (check of the FDO ® 925)Why should you checkthe sensor?When should you checkthe sensor?FDO ® Check procedureStability control(AutoRead)Carrying out the FDO ®Check procedureWith the FDO ® Check procedure, you can find out in a simple mannerwhether the FDO ® 925 D.O. sensor should be cleaned or calibrated.Checking can be useful in the following cases:• When the check interval has expired• If the measured values seem to be implausible• If you assume that the sensor cap is contaminated or at the end ofits lifetime• After the sensor cap was exchanged• Routinely within the scope of company quality assurance measures.Check in water vapor-saturated air.Use the check and storage vessel (FDO ® Check) to carry out the FDO ®Check procedure.The Stability control function (AutoRead) is automatically activated forthe FDO ® Check.Proceed as follows to carry out the FDO ® Check procedure:1 Connect the D.O. sensor to the meter.2 Place the D.O. sensor in the check and storage vessel, FDO ®Check.NoteThe sponge in the check and storage vessel must be moist (not wet).Leave the sensor in the check and storage vessel long enough so it canadapt to the ambient temperature.3 In the measuring menu, start the FDO ® Check procedure withFDO Check / Start FDO Check.The meter switches to the measured parameter, %.72 ba75865e13 09/2011


Multi 3430Operation30.03.2010 08:004 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.5 Wait for the AutoRead measurement to be completed([HOLD][AR]) display oraccept the measured value with .The measured value is frozen.6 Switch to the measured value display with .The check measurement is not documented.EvaluationThe evaluation is based on the accuracy required by the user. Togetherwith the nominal value (100 %), this results in a validity scope for thecheck.If the measured value is within the validity scope, no cleaning or usercalibration is required.If the measured value is outside the validity scope, the sensor shaft andmembrane should be cleaned, and the check should then be repeated(see section 5.4.1).Example:– Required accuracy: ± 2 %.– In water vapor-saturated air or air-saturated water, the nominalvalue for the relative D.O. saturation (abbreviated: saturation) is100 %.– Therefore, the validity scope is 98 ... 102 %– The check resulted in a measured value of 99,3 %The measurement error is within the specified validity scope.No cleaning or user calibration is required.ba75865e13 09/201173


Operation Multi 34304.9.5 D.O. calibrationWhy calibrate?D.O. sensors age. This changes the slope of the D.O. sensor. Calibrationdetermines the current slope of the sensor and stores this value inthe instrument.NoteThe FDO ® 925 D.O. sensor ages so little it does not have to be regularlycalibrated.To detect changes of the sensor as early as possible, the FDO ® Checkprocedure can be useful (see section 4.9.4).When to calibrate?Calibration proceduresStability control(AutoRead)Display calibration dataand output to interface• If your evaluation of the FDO ® Check procedure suggests a calibration• When the calibration interval has expired• If your accuracy requirements are especially high• Routinely within the scope of company quality assurance measures.Calibration in water vapor-saturated air.To calibrate the FDO ® 925 sensor, use the check and storage vessel,FDO ® Check.In calibration, the Stability control function (AutoRead) is automaticallyactivated.You can have the data of the last calibration displayed (see section4.10.6). Subsequently, you can transmit the displayed calibration datato the interface, e. g. to a PC, with the key.NoteThe calibration record is automatically transmitted to the interface aftercalibrating.Sample recordMulti 3430Ser. no. 10139695CALIBRATION OxCalibration date 30.03.2010 16:13:33FDO 925Ser. no. 10146858SC-FDO 925 10158765Relative slope 0.98Sensor +++Calibration evaluationAfter the calibration, the meter automatically evaluates the current statusof the calibration. The evaluation appears on the display and in thecalibration record.74 ba75865e13 09/2011


Multi 3430OperationCalibration evaluation ofthe FDO ® 925Display Calibration record Relative slope+++ S = 0.94 ... 1.06++ S = 0.92 ... 0.94 orS = 1.06 ... 1.08+ S = 0.90 ... 0.92 orS = 1.08 ... 1.10ErrorErrorEliminate the error according tochapter 6 WHAT TO DO IF...S < 0.90 orS > 1.10Calibration inwater vaporsaturatedairProceed as follows to calibrate the D.O. sensor:1 Connect the D.O. sensor to the meter.2 Place the FDO ® 925 D.O. sensor into the check and storagevessel, FDO ® Check.NoteThe sponge in the check and storage vessel must be moist (not wet).Leave the sensor in the check and storage vessel long enough so it canadapt to the ambient temperature.3 Start the calibration with .The last calibration data (relative slope) is displayed.ba75865e13 09/201175


Operation Multi 343030.03.2010 08:004 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.5 Wait for the AutoRead measurement to be completed([HOLD][AR]) display oraccept the calibration value with .The calibration record is displayed and output to the interface.6 Switch to the measured value display with .76 ba75865e13 09/2011


Multi 3430Operation4.9.6 Displaying calibration recordsDisplaying thecalibration recordThe calibration data can be displayed and then output to the interface.The calibration record of the last calibration is available under the menuitem, Calibration / Calibration record. To open it in the measured valuedisplay, press the key.The calibration records of the last 10 calibrations are available in themenu, Calibration / Calibration data storage / Display. To open the Calibrationmenu, press the key in the measuredvalue display.Menu itemSetting/functionDescriptionCalibration /Calibration data storage/ DisplayCalibration /Calibration data storage/ Copy to USBflash driveCalibration /Calibration data storage/ Output toRS232/USB- Displays the calibrationrecords.Further options:• Scroll through the calibrationrecords with.• Output the displayed calibrationrecord to the interfacewith .• Output all calibrationrecords to the interfacewith .• Quit the display with or .• Switch directly to the measuredvalue display with.- Outputs the calibration datastorage to a connected USBflash drive- Outputs the calibration datastorage to the interfaceba75865e13 09/201177


Operation Multi 34304.10 Conductivity4.10.1 General informationYou can measure the following parameters:• Conductivity• Specific resistance• Salinity• Total dissolved solids (TDS)NoteThe sensor connection and the USB-B (device) interface are galvanicallyisolated. This facilitates interference-free measurements also inthe following cases:• Measurement in grounded test samples• Measurement in one test sample with several sensors connected toone Multi 3430TemperaturemeasurementPreparatory activitiesIDS sensors measure the temperature with a temperature sensor integratedin the IDS sensor.Perform the following preparatory activities when you want to measure:1 Connect an IDS conductivity sensor to the meter.The conductivity measuring window is displayed.The Measuring cell and cell constant for the connected IDSconductivity sensor are automatically taken over.4.10.2 MeasuringYou can carry out conductivity measurements as follows:1 Perform the preparatory activities according to section 4.10.1.2 Immerse the IDS conductivity sensor in the test sample.78 ba75865e13 09/2011


Multi 3430OperationInfo30.09.2009 08:00Selecting thedisplayedmeasured parameterYou can switch between the following displays with :• Conductivity [μS/cm] / [mS/cm]• Resistivity [Ω·cm] / [kΩ·cm] / [MΩ·cm]• Salinity SaL [ ]• Total dissolved solids TDS [mg/l] / [g/l]The factor to calculate the total dissolved solids is set to 1.00 in the factory.You can adjust this factor to meet your requirements in the rangeof 0.40 to 1.00. The factor is set in the menu for the parameter, TDS.Freezing the measuredvalue (HOLD function)With the HOLD function, you can freeze the current measured value.The displayed measured value stops changing until you switch theHOLD function off.1 Freeze the measured value with .The [HOLD] status indicator is displayed.NoteIf the HOLD function is active, you can, e.g. start a manual measurementwith stability control.2 Release the frozen measured value again with .The HOLD function is switched off.The [HOLD] status display disappears.Stability control(AutoRead )The stability control function (AutoRead) continually checks the stabilityof the measurement signal. The stability has a considerable impact onthe reproducibility of measured values. The display of the measuredparameter flashes until a stable measured value is available.You can start the Stability control function manually at any time, irrespectiveof the setting for automatic Stability control (see section 4.4.3)in the System menu.ba75865e13 09/201179


Operation Multi 34301 Freeze the measured value with .The [HOLD] status indicator is displayed.2 Using , activate the Stability control functionmanually.The [AR] status indicator appears while the measured value isassessed as not stable. A progress bar is displayed and thedisplay of the measured parameter flashes.The [HOLD][AR] status indicator appears as soon as a stablemeasured value is recognized. The progress bar disappearsand the display of the measured parameter stops flashing.The current measurement data is output to the interface.Measurement data meeting the stability control criterion is markedby AR.NoteYou can prematurely terminate the Stability control function manuallywith at any time. If the Stability control function is prematurelyterminated, the current measurement data are output to theinterface without the AutoRead info.3 Using , start a further measurement withStability control.orRelease the frozen measured value again with .The display switches to the measured value display.The [AR][HOLD] status display disappears.Criteria for a stablemeasured valueThe Stability control function checks whether the measured values arestable within the monitored time interval.MeasuredparameterTime intervalStability in the time intervalConductivity ϰ 10 seconds ? ϰ: better than0.5% of measured valueTemperature 10 seconds ? T (° C): Better than 0.02The minimum duration until a measured value is assessed as stable isthe monitored time interval. The actual duration is mostly longer.80 ba75865e13 09/2011


Multi 3430Operation4.10.3 Temperature compensationThe calculation of the temperature compensation is based on the presetreference temperature, 20 °C or 25 °C. It appears on the display asTr20 or Tr25.You can select one of the following temperature compensation methods:• Nonlinear temperature compensation (nLF) according to EN 27888• Linear temperature compensation (lin) with adjustable coefficientsof 0.000 ... 3.000 %/K• No temperature compensation (off)NoteThe reference temperature and temperature compensation are set inthe menu for the parameter, conductivity (see section 4.10.4).Application tipsSelect the following temperature compensations given in the tableaccording to the respective test sample:Test sample Temperature compensation DisplayindicatorNatural water(ground water, surfacewater, drinking water)Ultrapure waterOther aqueous solutionsSalinity (seawater)nLFaccording to EN 27 888nLFaccording to EN 27 888lin Set lineartemperature coefficient0.001 ... 3.000 %/KAutomatic nLF according toIOTnLFnLFlinSal, nLFba75865e13 09/201181


Operation Multi 34304.10.4 Settings for IDS conductivity sensorsOverviewThe following settings are possible for IDS conductivity sensors:• Calibration record (display)• Calibration data storage (display)• Calibration interval• Reference temperature• Temperature compensation• TDS factor• Unit of the temperatureSettingsThe settings are made in the menu for the measured parameter, conductivity.To open the settings, display the required parameter in themeasured value display and press the key. Aftercompleting the settings, switch to the measured value display with.The possible settings are individually displayed for each sensor. Belowthe setting menu is displayed for two IDS sensors (TetraCon 925,LR325/01).Default settings are printed in bold.Setting menu ofTetraCon 925Menu itemPossiblesettingDescriptionCalibration /CalibrationrecordCalibration /Calibrationdata storageCalibration /Calibration datastorage / Copy toUSB flash drive- Displays the calibration record ofthe last calibration- Displays the last calibrationrecords (max. 10)- Outputs the calibration data storageto a connected USB flashdriveCalibration /Calibrationinterval1 ... 150 ...999 dCalibration interval for the IDSconductivity sensor (in days).The meter reminds you to calibrateregularly by the flashingsensor symbol in the measuringwindow.82 ba75865e13 09/2011


Multi 3430OperationMenu itemTypePossiblesettingCalmanDescriptionMeasuring cell usedMeasuring cells whose cell constantis determined by calibrationin the KCL control standard solution.Calibration range:0.450 to 0.500 cm -1The currently valid cell constantis displayed in the status line.Freely adjustable cell constant inthe range 0.450 ... 0.500 cm -1 .The cell constant and be displayedMan. cell const. 0.450 ...0.500 cm -10.475 ...and sethereTemp. comp. (TC)/ MethodTemp. comp. (TC)/Linear coeff.Temp. comp. (TC)/ Reference temp.nLFlinoff0.000 ...2.000 ...3.000 %/K20 °C25 °CProcedure for temperature compensation(see section 4.10.3).This setting is only available forthe measured parameters, ϰ andρ.Coefficient of the linear temperaturecompensation.This setting is only availablewhen the linear temperaturecompensation is set.Reference temperatureThis setting is only available forthe measured parameters, ϰ andρ.TDS factor 0.40 ... 1.00 Factor for TDS valueReset - Resets all sensor settings to thedelivery condition (see section4.13.1)ba75865e13 09/201183


Operation Multi 3430Setting menu ofLR325/01Menu itemPossible settingDescriptionThe cell constant can be displayedCell constant 0.090 ... ...0.110 cm -10.100 ...and sethereTemp. comp. (TC) /MethodTemp. comp. (TC) /Linear coeff.Temp. comp. (TC) /Reference temp.nLFlinoff0.000 ...2.000 ...3.000 %/K20 °C25 °CProcedure for temperaturecompensation (see section4.10.3).This setting is only availablefor the measured parameters,ϰ and ρ.Coefficient of the linear temperaturecompensation.This setting is only availablewhen the linear temperaturecompensation is set.Reference temperatureThis setting is only availablefor the measured parameters,ϰ and ρ.TDS factor 0.40 ... 1.00 Factor for TDS valueReset - Resets all sensor settings tothe delivery condition (seesection 4.13.1)84 ba75865e13 09/2011


Multi 3430Operation4.10.5 Determining the cell constant(calibration in control standard)Why determine the cellconstant?ProcedureStability control(AutoRead)Display calibration dataand output to interfaceAging slightly changes the cell constant, e. g. due to coatings. As aresult, an inexact measured value is displayed. The original characteristicsof the cell can often be restored by cleaning the cell. Calibrationdetermines the current value of the cell constant and stores this valuein the meter. Thus, you should calibrate at regular intervals (we recommend:every 6 months).You can determine the actual cell constant of the IDS conductivity sensorcell by calibrating with the control standard in the following range:• 0.450 ... 0.500 cm -1(e.g. TetraCon 925, nominal cell constant 0.475)The cell constant is determined in the control standard, 0.01 mol/l KCl.In the delivery condition, the calibrated cell constant of the IDS sensoris set to 0.475 cm -1 (conductivity measuring cell, TetraCon 925).In calibration, the Stability control function (AutoRead) is automaticallyactivated.You can have the data of the last calibration displayed (see section4.10.6). Subsequently, you can transmit the displayed calibration datato the interface, e. g. to a PC, with the key.NoteThe calibration record is automatically transmitted to the interface aftercalibrating.Sample recordMulti 3430Ser. no. 09250023CALIBRATION CondCalibration date 31.07.2009 16:13:33TetraCon 925Ser. no. 09250033Cell constant 0.476 1/cm 25.0 °CSensor +++Calibration evaluationAfter calibration, the meter automatically evaluates the current status ofthe calibration. The evaluation appears on the display and in the calibrationrecord.DisplayCalibrationrecordCell constant [cm -1 ]+++ Within the range0.450 ... 0.500 cm -1ba75865e13 09/201185


Operation Multi 3430DisplayCalibrationrecordCell constant [cm -1 ]ErrorErrorEliminate the error according tochapter 6 WHAT TO DO IF...Outside the range0.450 ... 0.500 cm -1Determining the cellconstantFor this calibration procedure, the Type setting must be set to cal . Proceedas follows to determine the cell constant:1 Connect an IDS conductivity sensor to the meter.2 In the measured value display, select the conductivity parameterwith .3 Start the calibration with .The cell constant that was calibrated last is displayed.30.09.2009 08:004 Immerse the IDS conductivity sensor in the control standardsolution, 0.01 mol/l KCI.5 Start the measurement with .The measured value is checked for stability (stability control).The [AR] status indicator is displayed. The measured parameterflashes.6 Wait for the measurement with stability control to be completed([HOLD][AR]) display oraccept the calibration value with .The calibration record is displayed and output to the interface.7 Switch to the measured value display with .86 ba75865e13 09/2011


Multi 3430Operation4.10.6 Displaying calibration recordsDisplaying thecalibration recordThe calibration data can be displayed and then output to the interface.The calibration record of the last calibration is to be found under themenu item, Calibration / Calibration record. To open it in the measuredvalue display, press the key.The calibration records of the last 10 calibrations are to be found in themenu, Calibration / Calibration data storage / Display. To open the Calibrationmenu, press the key in the measured valuedisplay.Menu itemSetting/functionDescriptionCalibration /Calibration data storage/ DisplayCalibration / Calibrationdata storage / Copy toUSB flash driveCalibration / Calibrationdata storage / Output toRS232/USB- Displays the calibrationrecords.Further options:• Scroll through the calibrationrecords with .• Output the displayed calibrationrecord to the interfacewith .• Output all calibrationrecords to the interface with.• Quit the display with or .• Switch directly to the measuredvalue display with.- Outputs the calibration datastorage to a connected USBflash drive- Outputs the calibration datastorage to the interfaceba75865e13 09/201187


Operation Multi 34304.11 Data storageYou can transmit measured values (datasets) to the data storage:• Manual storage (see section 4.11.1)• Automatic storage at intervals (see section 4.11.2)Each storage process transmits the current dataset to the interface atthe same time.Measurement datasetA complete dataset consists of:• Date/time• Meter name, series number• Sensor name, series number• ID number• Measured value of the connected sensor• Measured temperature value of the connected sensor• AutoRead info: AR appears with the measured value if theAutoRead criterion was met while storing (stable measured value).Otherwise, the AR display is missing.• Calibration evaluation:- 4 levels (+++, ++, +, -, or no evaluation) or- QSC (percentage)Storage locationsThe Multi 3430 meter has two measurement data memories. The measuredvalues recorded either manually or automatic are stored separatelyin individual measurement data memories.StorageMaximum number of datasetsManual data storage 500Automatic data storage 1000088 ba75865e13 09/2011


Multi 3430Operation4.11.1 Manual storageYou can transmit a measurement dataset to the data storage as follows.The dataset is at the same time output to the interface:1 Press the key shortly.The menu for manual storage appears.Manual data storage 4 From 50030.09.2009 11:24:16pH 7.000 24.8 °C AR +++ID number: 1Continue22.09.2009 08:002 If necessary, change and confirm the ID number (1 ... 10000)with and .The dataset is stored. The meter switches to the measuredvalue display.If the storage is fullWhen all storage locations are occupied, it is not possible to continuestoring. Then you can e.g. transmit the stored data to a PC or a USBflash drive (see section 4.11.3) and subsequently erase the storage(see section 4.11.4).4.11.2 Automatic storage at intervalsThe storage interval (Interval) determines the time interval betweenautomatic storage processes. Each storage process transmits the currentdataset to the interface at the same time.Configuring theautomatic storagefunction1 Press the key.The menu for automatic storage appears.ba75865e13 09/201189


Operation Multi 3430Automatic data storageID number 1Interval30 sDuration180 minContinue0d03h00minSet entire storing durationMax. available storingduration0 1d17h33min22.09.2009 08:00Graphical display of thestorage usageSettingsYou can configure the automatic storage function with the following settings:Menu itemPossiblesettingDescriptionID number 1 ... 10000 ID number for the dataset seriesInterval 1s, 5s, 10s,30 s, 1 min,5min,10 min,15 min,30 min,60 minStorage interval.The lower limit of the storage intervalcan be restricted by the number of freestorage locations.The upper limit is restricted by the storageduration.Duration1 min ... xminStorage duration.Specifies after which time the automaticstorage should be terminated.The lower limit of the storage durationis restricted by the storage interval.The upper limit is restricted by thenumber of free storage locations.Starting the automaticstorage functionTo start the automatic storage function, select continue with and confirm with . The meter switches to the measuredvalue display.90 ba75865e13 09/2011


Multi 3430OperationRemaining storage durationGraphical display of thestorage duration0d03h00min30.09.2009 08:00The active automatic storage function can be recognized by the progressbar in the status line. The progress bar indicates the remainingstoring duration.NoteIf the automatic storage function is activated, only the following keysare active: , and . The other keys and theautomatic switch-off function are deactivated.Terminating theautomatic storagefunction prematurelyProceed as follows to switch off the automatic storage function beforethe adjusted storage duration has expired:1 Press the key.The following window appears.WarningStop automatic storage?YesNo22.09.2009 08:002 Using , select yes and confirm with .The meter switches to the measured value display.The automatic storage function is terminated.ba75865e13 09/201191


Operation Multi 34304.11.3 Editing the measurement data storageThe contents of the manual or automatic measurement data storagecan be shown on the display.Each of the measurement data storages has a function to erase theentire contents.Editing the data storageThe storage is edited in the menu, Storage & config / Data storage. Toopen the Storage & config menu, press the key inthe measured value display.Open the manual or automatic storage directly with the or key.NoteThe settings are explained here using the manual storage as an example.The same settings and functions are available for the automaticstorage.Settings Menu item Setting/functionDescriptionData storage /Manual data storage /DisplayData storage /Manual data storage /Copy to USB flashdriveData storage /Manual data storage /Output to RS232/USBData storage /Manual data storage /Erase- Displays all measurementdatasets page by page.Further options:• Scroll through the datasetswith .• Output the displayeddataset to the interfacewith .• Quit the display with.- Outputs all stored measurementdata to a connectedUSB flash drive- Outputs all stored measurementdata to the interface- Erases the entire manualmeasurement data storage.Note:All calibration data remainsstored when this action isperformed.92 ba75865e13 09/2011


Multi 3430OperationDisplay presentationof a datasetManual data storage 3 of 6430.09.2009 11:24:16 ID number: 1SenTix 940B20234008565pH 7.000 24.8 °C AR Sensor: +++22.09.2009 08:00Sample printout31.07.2009 09:56:20Multi 3430Ser. no. 09250023SenTix 940Ser. no. B092500013ID number 2pH 6.012 24.8 °C, AR, Sensor: +++________________________________________31.07.2009 10:56:20Multi 3430Ser. no. 09250013SenTix 940Ser. no. B092500013ID number 2pH 6.012 24.8 °C, AR, Sensor: +++________________________________________etc...Quitting the displayTo quit the display of stored measurement datasets, you have the followingoptions:• Switch directly to the measured value display with .• Quit the display and move to the next higher menu level with.4.11.4 Erasing the measurement data storageHow to erase the measurement data memory is described in section4.11.3 EDITING THE MEASUREMENT DATA STORAGE.ba75865e13 09/201193


Operation Multi 34304.12 Transmitting data (USB interfaces)4.12.1 Outputting current measurement data1 Output the current measurement data to the USB-B interfacewith .4.12.2 Transmitting data (to a PC)The meter has the following interfaces:• USB-B interface (USB Device)e.g. to connect a PC• USB-A interface (USB Host),e.g. to connect a USB flash driveVia the USB-B interface (USB Device) you can transmit data to a PC orprinter and update the meter software.Via the USB-A interface (USB Host) it is possible to transfer data to anexternal USB memory device.4.12.3 Connecting the PC / USB-B interface (USB Device)Connect the Multi 3430 to the PC via the USB-B interface.Installation of the USBdriver on the PCSystem requirements of the PC for installation of the USB driver:• PC with at least one free USB connection and CD-ROM drive• Windows 2000, Windows XP, Windows Vista or Windows 7.1 Insert the supplied installation CD in the CD drive of your PC.2 Install the driver from the CD.Follow the Windows installation instructions as necessary.3 Connect the Multi 3430 to the PC via the USB-B interface.The meter is listed as a virtual COM interface among the connectionsin the Windows instrument manager.94 ba75865e13 09/2011


Multi 3430Operation4 Set the same transmission data at the connected instrument(PC):• Baud rate: to be selected in the range 1200 ... 19200• Handshake: RTS/CTS• Set at the PC only:– Parity: none– Data bits: 8– Stop bits: 14.12.4 Options for data transmission to a PC (USB-B interface)Via the USB-B interface you can transmit data to a PC. The followingtable shows which data are transmitted to the interface in which way:Data Control Operation / descriptionCurrentManual • With measured values• Simultaneously with everyof all connectedmanual storage processsensors(see section 4.11.1)Stored measuredvaluescalibrationrecordsAutomatic, atintervalsManualManualAutomatic• With .Then you can set the transmissioninterval• Simultaneously with everyautomatic storage process(see section 4.11.2)• Displayed dataset with after calling up fromthe storage• All datasets with the Outputto RS232/USB functionFor details, see section 4.11.3.• Displayed calibration recordwith • All calibration records withFor details, see section 4.12.• At the end of a calibrationprocedureNoteThe following rule applies: With the exception of the menus, shortlypressing the key generally outputs the display contents to theinterface (displayed measured values, measuring datasets, calibrationrecords).ba75865e13 09/201195


Operation Multi 34304.12.5 Connecting the USB memory device / USB-Ainterface (USB Host)Connect the USB-A interface (USB Host) of the Multi 3430 to a USBflash drive.1 Connect a USB flash drive to the USB Host interface.4.12.6 Data transmission to a USB memory device(USB-A interface)Via the USB-A interface you can transmit data to a USB memorydevice. The following table shows which data are transmitted to theinterface in which way:Data Control Operation / descriptionStored measuredvaluesManual All datasets with the Output toRS232/USB function.For details, see section 4.11.3.Calibration datastorageManualAll stored calibration records ofa sensor with the Copy to USBflash drive function.For details, see the menu forcalibration and measurementsettings of the sensor.96 ba75865e13 09/2011


Multi 3430Operation4.13 ResetYou can reset (initialize) all sensor settings and sensor-independentsettings separately from each other.4.13.1 Resetting the measurement settingsNoteThe calibration data are reset to the default settings together with themeasuring parameters. Recalibrate after performing a reset.pHThe following settings for pH measurements are reset to the defaultsettings with the Reset function:SettingBufferCal. intervalUnit for slopeMeasured parameterDefault settingsAutoCalTEC7 dmV/pHpHpH resolution 0.001mV resolution 0.1AsymmetrySlope0 mV-59.2 mVMan. temperature 25 °CSingle-point calibrationOffThe sensor settings are reset under the Reset menu item in the menufor calibration and measurement settings. To open the settings, displaythe required parameter in the measured value display and press the key.ORPThe following settings for ORP measurements are reset to the defaultsettings with the Reset function:SettingDefault settingsmV resolution 0.1Man. temperature 25 °CThe sensor settings are reset under the Reset menu item in the menufor calibration and measurement settings. To open the settings, displayba75865e13 09/201197


Operation Multi 3430the required parameter in the measured value display and press the key.Dissolved oxygenThe following settings for D.O. measurements are reset to the defaultsettings with the Reset function:SettingCal. intervalCheck intervalMeasured parameterDefault settings180d60 dD.O. concentrationRelative slope (S Rel ) 1.00Salinity (value) 0.0Salinity (function)OffThe sensor settings are reset under the Reset menu item in the menufor calibration and measurement settings. To open the settings, displaythe required parameter in the measured value display and press the key.ConductivityThe following settings for conductivity measurements are reset to thedefault settings with the Reset function:SettingCal. intervalMeasured parameterCell constant (c)Temperature compensationDefault settings150 dϰDepending on the connectedmeasuring cell:0.475 cm -1 (calibrated)0.475 cm -1 (set up)0.100 cm -1nLFReference temperature 25 °CTemperature coefficient (TC) of thelinear temperature compensation2.000 %/KTDS factor 1,00The sensor settings are reset under the Reset menu item in the menufor calibration and measurement settings. To open the settings, displaythe required parameter in the measured value display and press the key.98 ba75865e13 09/2011


Multi 3430Operation4.13.2 Resetting the system settingsThe following system settings can be reset to the default condition:SettingLanguageAcoustic signalDefault settingsEnglishOnVolume 6Baud rateOutput format4800 BaudASCIIDecimal separator .Brightness 15IlluminationSwitchoff timeAuto1 hTemperature unit °CUSB HostStability controlOnOnThe system settings are reset in the menu, Storage & config / System/ Reset. To open the Storage & config menu, press the key in the measured value display.ba75865e13 09/201199


Operation Multi 3430100 ba75865e13 09/2011


Multi 3430Maintenance, cleaning, disposal5 Maintenance, cleaning, disposal5.1 MaintenanceThe only maintenance activity required is replacing the batteries.NoteSee the relevant operating manuals of the IDS sensors for instructionson maintenance.5.1.1 Replacing the rechargeable batteries1 Unscrew the two screws (1) on the underside of the meter.2 Open the battery compartment (2) on the underside of themeter.123 Remove the four rechargeable batteries from the battery compartment.4 Place four new rechargeable batteries (type Mignon AA) in thebattery compartment.CAUTIONMake sure that the poles of the rechargeable batteries are positionedcorrectly.The ± signs on the batteries must correspond to the ± signs in thebattery compartment.ba75865e13 09/2011101


Maintenance, cleaning, disposal Multi 34305 Close the battery compartment (2) and tighten the screws (1).5.2 CleaningOccasionally wipe the outside of the measuring instrument with adamp, lint-free cloth. Disinfect the housing with isopropanol asrequired.CAUTIONThe housing is made of synthetic material (ABS). Thus, avoid contactwith acetone or similar detergents that contain solvents. Removeany splashes immediately.5.3 PackingThis meter is sent out in a protective transport packing.We recommend: Keep the packing material. The original packing protectsthe meter against damage during transport.5.4 DisposalNoteThis meter contains rechargeable batteries. Batteries that have beenremoved must only be disposed of at a recycling facility set up for thispurpose or via the retail outlet.It is illegal to dispose of the batteries in household refuse.Within the European Union, the batteries are removed at a specializedtreatment center at the instrument's end of life. The instruments aretaken to one of those specialized treatment centers via the recyclingsystem set up for this purpose.102 ba75865e13 09/2011


Multi 3430What to do if...6 What to do if...6.1 General informationSensor symbol flashesCauseRemedy– Calibration interval expired – Recalibrate the measuringsystemCauseRemedyDisplay– Batteries almost empty – Charge the batteries (seesection 3.3.2 CONNECTINGTHE POWER PACK / CHARGINGTHE BATTERIES)– Replace the batteries (seesection 5.1 MAINTENANCE)Meter does not react tokeystrokeCause– Operating condition undefinedor EMC load unallowedRemedy– Processor reset:Press the and key simultaneouslyYou want to know whichsoftware version is inthe meter or IDS sensorCause– E. g., a question by the servicedepartmentRemedy– Switch on the meter.– Open the menu, / Storage &config / System / Serviceinformation. The instrumentdata are displayed.or– Connect the sensor.Press softkey [Info]/[More].The sensor data are displayed(see section 4.5)ba75865e13 09/2011103


What to do if... Multi 3430Data transmission toUSB memory devicedoes not workCause– Connected USB memory devicehas not been recognized, e. g.– the USB memory device hasbeen formattet to a file systemwhich is not supported(e. g. NTFS)Remedy– Use other USB memorydevice– Reformat the USB memorydevice to FAT 16 or FAT 32file system(Caution: Reformattingerases all data on the USBmemory device. Back up alldata before reformatting.)Error message,Only use rechargeablebatteries!Ni-MH 1.2 V, >2100 mAhCause– A voltage that is unusual forNiMH rechargeable batterieswas found.Remedy– Disconnect the power packfrom the meter.– Check whether there aresuitable rechargeable batteries(Ni-MH 1.2 V, >2100mAh) in the battery compartment.– Unsuitable batteries:Insert suitable rechargeablebatteries and reconnectthe power pack.– Suitable batteries:Connect the power packand close the error messagewith or.Error message,Memory error 1Cause– Instrument storage was notfoundRemedy– Please contact the service.104 ba75865e13 09/2011


Multi 3430What to do if...Error message,OFL, UFL6.2 pHCauseIDS pH sensor:– Measured value outside themeasuring rangeRemedy– Use suitable IDS pH sensor– Air bubble in front of the junction – Remove air bubble– Air in the junction – Extract air or moisten junction– Cable broken – Exchange IDS pH sensor– Gel electrolyte dried out – Exchange IDS pH sensorError message,ErrorCauseIDS pH sensor:– The values determined for zeropoint and slope of the IDS pHsensor are outside the allowedlimits.Remedy– Recalibrate– Junction contaminated – Clean junction– IDS pH sensor broken – Exchange IDS pH sensor– Buffer solutions:– The used buffer solutions are notsuitable for the selected bufferset– Select a different buffer setor– Use different buffer solutions– Buffer solutions too old – Use only once.Note the shelf life– Buffer solutions depleted – Change solutionsba75865e13 09/2011105


What to do if... Multi 3430No stable measuredvalueCauseIDS pH sensor:Remedy– Junction contaminated – Clean junction– Membrane contaminated – Clean membraneTest sample:– pH value not stable – Measure with air excluded ifnecessary– Temperature not stable – Adjust temperature if necessaryIDS pH sensor + test sample:– Conductivity too low – Use suitable IDS pH sensor– Temperature too high – Use suitable IDS pH sensor– Organic liquids – Use suitable IDS pH sensorObviously incorrectmeasured valuesCauseIDS pH sensor:Remedy– IDS pH sensor unsuitable – Use suitable IDS sensor– Temperature differencebetween buffer and test sampletoo great– Measurement procedure notsuitable– Adjust temperature of bufferor sample solutions– Follow special procedure6.3 Dissolved oxygenError message,OFLCause– Measured value outside themeasuring rangeRemedy– Select a suitable measuringmedium106 ba75865e13 09/2011


Multi 3430What to do if...Error message,ErrorCauseRemedy– Sensor contaminated – Clean the sensor– Measured temperature outsidethe operating conditions(OFL/UFL displayed instead oftemperature value)– Observe the temperaturerange for the measuringmedium– Defective sensor – Replace sensorNoteMore information, as well as notes on cleaning and replacement ofsensors, are given in the documentation of your sensor.6.4 ConductivityError message,OFLCause– Measured value outside themeasuring rangeRemedy– Use suitable IDS conductivitysensorError message,ErrorCauseRemedy– Sensor contaminated – Clean sensor and replace itif necessary– Calibration solution not suitable – Check calibration solutionsNoteMore information, as well as notes on cleaning and replacement ofsensors, are given in the documentation of your sensor.ba75865e13 09/2011107


What to do if... Multi 3430108 ba75865e13 09/2011


Multi 3430Technical data7 Technical data7.1 General dataDimensions Approx. 180 x 80 x 55 mmWeight Approx. 0.4 kgMechanical structure Type of protection IP 67Electrical safety Protective class IIITest certificates CE, cETLusAmbientconditionsPowersupplyStorage - 25 °C ... + 65 °COperation -10 °C ... + 55 °CWith the power pack connected(batteries being charged): -10 °C ... + 40 °CAllowable relativehumidityAnnual mean: < 75 %30 days/year: 95 %Other days: 85 %Rechargeable 4 x 1.2 V NiMH rechargeable batteries,batteriestype AAOperational life Approx. 150 h #Power pack(charging device)Kuantech Co. Ltd. KSAC 0900110W1UV-1Input: 100 ... 240 V ~ / 50 ... 60 Hz / 270 mAOutput: 9 V = / 1.1 AConnection max. overvoltage category IIPrimary plugs contained in the scope ofdelivery: Euro, US, UK and Australian.USB interface (device) Type USB 1.1USB-B (Device), PCBaud rateadjustable:1200, 2400, 4800, 9600, 19200 BaudData bits 8Stop bits 2ParityNoneHandshakeRTS/CTSCable lengthmax. 3 m#The operational life is shorter if, e.g.- several sensors are operated- the maximum display illumination is setba75865e13 09/2011109


Technical data Multi 3430USB interface (host) Type USB 2.0USB-A (host), USB deviceApplicable directivesand standardsEMCEC directive 2004/108/ECEN 61326-1EN 61000-3-2EN 61000-3-3FCC Class AMeter safetyEC directive 2006/95/ECEN 61010-1IP protection class EN 605297.2 Measuring ranges, resolution, accuracyMeasuring ranges,accuracyVariable Measuring range AccuracyAir pressure(absolute)a300 ... 1100 mbar ± 4 mbaraonly available with connected D.O. sensorNoteFurther data are given in the documentation of your sensor.110 ba75865e13 09/2011


Multi 3430Technical dataFCC Class A Equipment StatementNote: This equipment has been tested and found to comply withthe limits for a Class A digital device, pursuant to Part 15 of theFCC Rules. These limits are designed to provide reasonableprotection against harmful interference when the equipment isoperated in a commercial environment. This equipmentgenerates, uses, and can radiate radio frequency energy and, ifnot installed and used in accordance with the instruction manual,may cause harmful interference to radio communications.Operation of this equipment in a residential area is likely to causeharmful interference in which case the user will be required tocorrect the interference at his own expense.Changes or modifications not expressly approved by themanufacturer could void the user‘s authority to operate theequipment.ba75865e13 09/2011111


Technical data Multi 3430112 ba75865e13 09/2011


Multi 3430Lists8 ListsThis chapter provides additional information and orientation aids.Specialist termsThe glossary briefly explains the meaning of the specialist terms. However,terms that should already be familiar to the target group are notdescribed here.IndexThe index will help you to find the topics that you are looking for.GlossaryAdjustingAsymmetryAutoRangeCalibrationD.O. partial pressureElectromotive force ofan electrodeJunctionMeasured parameterMeasured valueTo manipulate a measuring system so that the relevant value (e. g. thedisplayed value) differs as little as possible from the correct value ora value that is regarded as correct, or that the difference remains withinthe tolerance.see zero pointName of the automatic selection of the measuring range.Comparing the value from a measuring system (e. g. the displayedvalue) to the correct value or a value that is regarded as correct. Often,this expression is also used when the measuring system is adjustedat the same time (see adjusting).Pressure caused by the oxygen in a gas mixture or liquid.The electromotive force U of the combination electrode is the measurableelectromotive force of an electrode in a solution. It equals thesum of all the galvanic voltages of the combination electrode. Its dependencyon the pH results in the electrode function, which is characterizedby the parameters, slope and zero point.The junction is a porous body in the housing wall of reference electrodesor electrolyte bridges. It arranges the electrical contact betweentwo solutions and makes the electrolyte exchange moredifficult. The expression, junction, is also used for ground or junctionlesstransitions.The measured parameter is the physical dimension determined bymeasuring, e. g. pH, conductivity or D.O. concentration.The measured value is the special value of a measured parameter tobe determined. It is given as a combination of the numerical value andunit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K).ba75865e13 09/2011113


Lists Multi 3430ORP voltageOxygen saturationpH valuePotentiometryResetResolutionSalinitySalt contentSlopeStability control(AutoRead )Standard solutionTest sampleZero pointThe ORP is caused by oxidizing or reducing substances dissolved inwater if these substances become effective on an electrode surface(e. g. a gold or platinum surface).Short name for "Relative D.O. saturation".The pH value is a measure of the acidic or basic effect of an aqueoussolution. It corresponds to the negative decadic logarithm of the molalhydrogen ions activity divided by the unit of the molality. The practicalpH value is the value of a pH measurement.Name of a measuring technique. The signal (depending on the measuredparameter) of the electrode is the electrical potential. The electricalcurrent remains constant.Restoring the original condition of all settings of a measuring system.Smallest difference between two measured values that can be displayedby a meter.The absolute salinity S A of seawater corresponds to the relationshipof the mass of dissolved salts to the mass of the solution (in g/Kg). Inpractice, this dimension cannot be measured directly. Therefore, thepractical salinity according to IOT is used for oceanographicmonitoring. It is determined by measuring the electrical conductivity.General designation for the quantity of salt dissolved in water.The slope of a linear calibration function.Function to control the measured value stability.The standard solution is a solution where the measured value isknown.It is used to calibrate a measuring system.Designation of the test sample ready to be measured. Normally, a testsample is made by processing the original sample. The test sampleand original sample are identical if the test sample was not processed.The zero point of a pH combination electrode is the pH value at whichthe electromotive force of the pH combination electrode at a specifiedtemperature is zero. Normally, this is at 25 °C.114 ba75865e13 09/2011


Multi 3430IndexAAir calibration beaker . . . . . . . . . . . . . . . . . 68Authorized use . . . . . . . . . . . . . . . . . . . . . . 18Automatic switch-off . . . . . . . . . . . . . . . . . . 25AutoReadConductivity . . . . . . . . . . . . . . . . . . . . . 73O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . 61pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38BBattery compartment . . . . . . . . . . . . . . 21, 95CCalibrationConductivity . . . . . . . . . . . . . . . . . . . . . 79O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Calibration evaluationConductivity . . . . . . . . . . . . . . . . . . . . . 79O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Calibration intervalConductivity . . . . . . . . . . . . . . . . . . . . . 76O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Calibration pointspH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Calibration recordsConductivity . . . . . . . . . . . . . . . . . . . . . 81O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Cell constant . . . . . . . . . . . . . . . . . . . . . . . 79Connect the power pack . . . . . . . . . . . . . . 22Connecting a PC . . . . . . . . . . . . . . . . . 88, 90DDataset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82Date and time . . . . . . . . . . . . . . . . . . . . . . . 31Default settingsMeasured parameter . . . . . . . . . . . . . . 91System settings . . . . . . . . . . . . . . . . . . 94Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11EEnergy saving feature . . . . . . . . . . . . . . . . 23FFirmware update . . . . . . . . . . . . . . . . . . . 107IInitial commissioning . . . . . . . . . . . . . . 21, 23Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . 91Interval for calibration . . . . . . . . . . . . . . . . 47KKeys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10MMeasured value display . . . . . . . . . . . . . . . 27Measurement accuracy . . . . . . . . . . . . . . . 47Measurement data storageEdit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86Erase . . . . . . . . . . . . . . . . . . . . . . . . . . 86Storage locations . . . . . . . . . . . . . . . . . 82Measurement dataset . . . . . . . . . . . . . . . . 82MeasuringConductivity . . . . . . . . . . . . . . . . . . . . . 72O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64ORP voltage . . . . . . . . . . . . . . . . . . . . 60pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Menu for calibration and measurement settingsConductivity . . . . . . . . . . . . . . . . . . . . . 76O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67pH/ORP . . . . . . . . . . . . . . . . . . . . . 40, 62Menus (navigation) . . . . . . . . . . . . . . . . . . 27Messages . . . . . . . . . . . . . . . . . . . . . . . . . 28OOperational safety . . . . . . . . . . . . . . . . . . . 18PpH buffer sets . . . . . . . . . . . . . . . . . . . . . . 42Precautions . . . . . . . . . . . . . . . . . . . . . . . . 17RReset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91RS232 interface . . . . . . . . . . . . . . . . . . . . . 90SSafety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17ba75865e13 09/2011115


Index Multi 3430Scope of delivery . . . . . . . . . . . . . . . . . . . . 21Setting the date . . . . . . . . . . . . . . . . . . . . . 23Setting the time . . . . . . . . . . . . . . . . . . . . . 23Single-point calibrationpH . . . . . . . . . . . . . . . . . . . . . . 49, 52, 53SlopepH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Slope, relative . . . . . . . . . . . . . . . . . . . . . . 68Socket field . . . . . . . . . . . . . . . . . . . . . . . . 13Stability controlautomatic . . . . . . . . . . . . . . . . . . . . . . . 35Conductivity . . . . . . . . . . . . . . . . . . . . . 73O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65ORP . . . . . . . . . . . . . . . . . . . . . . . . . . 61pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Storage interval . . . . . . . . . . . . . . . . . . . . . 83Storing in memory . . . . . . . . . . . . . . . . . . . 63Automatic . . . . . . . . . . . . . . . . . . . . . . 83Manual . . . . . . . . . . . . . . . . . . . . . . . . 83TTemperature compensation . . . . . . . . . . . 75Temperature measurementConductivity . . . . . . . . . . . . . . . . . . . . . 71O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Three-point calibrationpH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Transmitting data . . . . . . . . . . . . . . . . . . . 88Transmitting measured values . . . . . . . . . 88Two-point calibrationpH . . . . . . . . . . . . . . . . . . . . . . 49, 52, 54ZZero point of pH combination electrode . . 42116 ba75865e13 09/2011


Multi 3430Appendix: Firmware update9 Appendix: Firmware updateWith the Multi 3430 you can update the firmware of your meter and IDSsensors.9.1 Firmware update for the meter Multi 3430General informationAvailable firmware updates for the meter are provided on the Internet.With the "Firmware Update " program and a PC you can update thefirmware of the Multi 3430 to the newest version.For the update you have to connect the meter to a PC.For the update via the USB-B interface, the following is required:• a free USB interface (virtual COM port) on the PC• the driver for the USB interface (on the enclosed CD-ROM)• the USB cable (included in the scope of delivery of the Multi 3430).Program installationProgram startFirmware update1 Install the downloaded firmware update on a PC.An update folder is created in the Windows start menu.If an update folder already exists for the meter (or meter type),the new data are displayed there.2 In the windows start menu, open the update folder and start thefirmware update program for the meter3 Using the USB interface cable, connect the Multi 3430 to aUSB interface (virtual COM port) of the PC.4 Switch on the Multi 3430.5 In the firmware update program, start the update process withOK.6 Follow the instructions of the firmware update program.During the programming process, a corresponding messageand a progress bar (in %) are displayed.The programming process takes up to 15 minutes. A terminatorymessage is displayed after a successful programming process.The firmware update is completed.7 Disconnect the Multi 3430 from the PC.The Multi 3430 is ready for operation again.After switching the meter off and on you can check whether the meterhas taken over the new software version (see page 103).ba75865e13 09/2011117


Appendix: Firmware update Multi 34309.2 Firmware-Update for IDS SensorsGeneral informationAvailable firmware updates for IDS sensors are provided on the Internet.With the "Firmware Update" program and a PC you can update thefirmware of an IDS sensor to the newest version.For updating, connect the IDS sensor to the Multi 3430, and theMulti 3430 to a PC.For the update via the USB-B interface, the following is required:• a free USB interface (virtual COM port) on the PC• the driver for the USB interface (on the enclosed CD-ROM)• the USB cable (included in the scope of delivery of the Multi 3430).Program installationProgram startFirmware update1 Install the downloaded firmware update on a PC.An update folder is created in the Windows start menu.If an update folder already exists for the sensor (or sensortype), the new data are displayed there.2 In the windows start menu, open the update folder and start thefirmware update program for the IDS sensor3 Connect the IDS sensor to the meter.Only the sensor connection in the lower section of the socketfield (channel 1) is suitable for firmware update.4 Using the USB interface cable, connect the Multi 3430 to aUSB interface (virtual COM port) of the PC.5 Switch on the Multi 3430.6 In the firmware update program, start the update process withOK.7 Follow the instructions of the firmware update program.During the programming process, a corresponding messageand a progress bar (in %) are displayed.The programming process takes up to 5 minutes. A terminatorymessage is displayed after a successful programming process.The firmware update is completed.8 Disconnect the Multi 3430 from the PC.Meter and sensor are ready for operation again.After switching the meter off and on you can check whether the sensorhas taken over the new software version (see page 103).118 ba75865e13 09/2011


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