Analyze Single and Dual Input Analyzers for pH/Redox (ORP)

Data SheetSS/AX4PH_4Analyze ITSingle and Dual Input Analyzersfor pH/Redox (ORP)Models AX460, AX466 and AX416■ Cost effective– select one or two pH/Redox (ORP) inputs orcombine pH/Redox (ORP) and conductivity in oneanalyzer■ Reduced installation cost– easy access terminations; reduced panel space■ High functionality at minimum cost– three alarms and two fully isolated current outputs– integral Water/Chemical sensor cleaner control– integral PID controller (AX460)■ Expanded monitoring and control– add-on option board provides a total of five alarmrelays and four current outputs– service log-book providing historical data■ On line assurance of reliability– comprehensive sensor and instrumentself-checking■ Energy saving– high visibility backlit display with auto switch-offfunction■ Reduced yearly maintenance costs– 12 to 30V DC option negates the need for costlysafety tests■ Wide range of applicability– water and wastewater treatment– power, pure water– semiconductors– chemicals– pharmaceuticals– pulp & paperMore processing power,higher performance

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4The Analyze IT AX400 SeriesAnalyze IT AX400 analyzers incorporate the latest technology toprovide highly reliable, flexible, feature-packed devices thatsatisfy a diverse range of process monitoring and controlapplications. The complete range encompasses solutions forpH/Redox (ORP), conductivity and dissolved oxygen.AX46x analyzers enable continuous measurements of one ortwo pH or Redox (ORP) points with simultaneous local displayand retransmission. AX46x is used with glass, enamel andantimony pH electrodes and metal Redox sensors, providingmeasurements with exceptional accuracy and performance.AX400 Series analyzers are available for either wall-/pipe- orpanel-mounting and are rated to IP66/NEMA 4X.High Functionality as StandardAll versions are supplied with two, fully isolated current outputsas standard, that can be assigned to the measured parameter,sample temperature or any appropriate calculated variables.Three programmable relay set points are available that can alsobe assigned as required.Innovative features such as power-saving display and adiagnostic current output option all contribute to a low cost ofownership.Significantly Reduced Maintenance CostsThe AX400 analyzers are supplied as standard for 85 to 265V ACoperation. There are no inner switches to set.They can also be provided for 24V AC or 12 to 30V DC supplyand recognize automatically which of the two supplies is beingused. 24V DC operation reduces maintenance costssignificantly by negating the need for costly, yearly safety tests toensure compliance with safety procedures.Energy Saving DisplayThe backlit display has been designed to operate in all types ofenvironments and shows both the measured parameter(s) and,on a separate 16-character display line, diagnostic andcomputed information.On dual-input analyzers both measured parameters aredisplayed simultaneously.For conservation of energy, the backlight can be set to switch offautomatically after 60s of inactivity.Plug-and-Produce Expanded ControlAn advanced function card provides an additional two currentoutputs and two further alarm relays that can be assigned toeither measured values or sample temperature.ABB Plug-and-Produce software automatically reconfigures theanalyzer if an option board is added later. No user programmingis necessary.A real-time clock and logbook are also included making the fullfacilityversions extremely powerful and versatile.Backlight Can Be Set to Switch Off When InactiveEasy-Access Installation TerminalsEasy access to the terminations ensures rapid and costeffectiveinstallation. The wall-/pipe-mount version has beendesigned to ensure that cable connection is simple andconvenient. Ingress protection of the electronics section isretained even when the terminal compartment cover is opened.7.007.00 pHpHMonitoring pH3 StandardRelay Outputs7.00 pH7.00pHMonitoring pH2 AdditionalRelay Outputs2 StandardCurrent Outputs2 AdditionalCurrent OutputsAX400 OutputsAX400 Termination Chamber Makes Access Easy2

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4Dual Input Measurement for Critical DutiesThe AX400 enables two continuous measurements withsimultaneous local display and retransmission. This capabilityprovides an on-line validation of the process measurement.Making two simultaneous measurements and configuring one ofthe set points as a difference alarm provides continuous on-linechecking and early warning of an invalid measurement.pH Sensor ApH Sensor BAX466 Dual InputpH + pH AnalyzerOutput PV1Output PV2Difference AlarmWaste Treatment pH & Redox (ORP)pH and Redox (ORP) are essential control parameters whenremoving toxic chromium ions from waste water in metalfinishingapplications. Dual pH and Redox analyzers and integralcontrol simplifies installation and reduces investment costs.AcidChromeWasteBisulphitepH On/OffORP On/OffpHAX466pH/ORPORPCausticpH ProportionalAX460pHpHReductionNeutralizationDual-input Comparator for Critical MeasurementsDetecting breakthrough of ammonia in a chiller unit is madepossible with dual measurement. Comparison before and afterthe chiller ensures extremely rapid leakage detection, preventingdamage to the system.Waste Treatment pH and Redox (ORP)Just-in-Time MaintenanceOne of the most vulnerable times for a pH electrode is duringreintroduction into the line. If used with a solution earth rod,AX46x analyzers with advanced diagnostic facilities can detectsensor breakages as they occur. In addition, they can detectsensors out-of-process and several reference faults for faultdiagnosis and reduced downtime.Process or WasteWater OutletTubular Heat ExchangerProcess or WasteWater Inlet'Cable Broken/Disconnected'Ammonia Leakage Detection in a Chiller Unit'Glass Crackedor Broken''Reference Fault''Electrode Out of Sample'Just-in-Time Maintenance3

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4Reduced MaintenanceThrough In-line CleaningMany installed pH sensors benefit from regular cleaning. Whencarried out manually, this can be laborious and costly – so isoften ignored. Advanced AX400 pH analyzers make it possibleto automate sensor cleaning by using a programmable washtimercontact to activate a cleaning agent valve or pump.Pulsed water-wash and jet-wash chemical clean actions arestandard, user-selectable functions. The frequency and durationof the wash can be tuned to meet the requirements of theapplication.For chemical cleaning a 60 liter (13 gallon) sensor cleaningstation can be supplied (model no. AA0010), complete withdelivery pump and low level alarm. Chemical cleaning hasproved particularly successful on potable drinking water plantswhere manganese and iron in the sample can createunacceptably high levels of maintenance. Effective cleaningreduces cost of ownership.PowerSupplyContactAX46x Analyzer/WashControllerSensorCablesCleaningAgent TubesAA010 SensorCleaning Station1 or 2 SensorSystemsEfficient Auto-cleaning Control for One or Two Sensor SystemsCombined Conductivity and pHThe AX416 version measures conductivity and pH with the sameanalyzer. The option board provides the capability to retransmitpH, conductivity and both sample temperatures. Fiveprogrammable alarms can be assigned to suit the needs of theapplication, enabling even the most demanding requirements tobe met.AX460 Integral P, PI and PID ControlThe single input AX460 analyzers incorporate three-term PIDControl, offering three modes of sophisticated control: analog,pulse length (time proportional) and pulse frequency. These aresupplied as standard and can be operated in direct- or reverseactingmode, dependent upon the application.Auto/Manual and Bumpless TransferAn auto/manual feature is incorporated for rapid manual accessto the control functions. The controller facilitates bumplesstransfer between manual and auto modes, providing themeasured variable is within the proportional band and someintegral action time has been programmed.PumpControlSignalReagent PumpStroke PositionAdjustedAutomaticallyby ControllerSampleReagent TankAX460 pH AnalyzerSampleStirrerAX460 – Integral P, PI, and PID ControlPower SupplyElectrodeSystemCurrentOutputSampleCurrent Output Proportional ControlIn this case, the control signal is provided by the 4 to 20mAoutput of the AX460 analyzers rather than using the alarm/control contacts. The magnitude of the current output changesin proportion to the deviation from set point. This method is usedgenerally with motorized valves or when controlling the speed ofdosing pumps with a 4 to 20mA proportional input.Current Output (mA)204TimeSimultaneous Conductivity and pH MeasurementCurrent Acting Control4

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4Time Proportioning Control (Pulse Length)With time proportioning control, the AX460 analyzer’s controlsignal output is in pulses, the duration of which changes inproportion to the system error. The pulses are delivered byvarying the length of time that the alarm/control contact isactivated.Time Proportioning Control is used generally to control dosingby low-cost solenoid valves or metering pumps and is alsoknown as pulse-length proportional or Mark Space control.EnergizedDe-energizedEnergizedDe-energizedEnergizedDe-energized2.5secondsPermanently De-energized5 seconds7.5 seconds7.5 seconds5 secondsCycle time = 10 seconds2.5secondsOutput= 0%Output= 25%Output= 50%Output= 75%Pulse-frequency Proportional ControlImpulse pumps dosing chemical reagents are controlled easilyby the AX460 analyzer’s pulse-frequency proportional controloutput. In this case, the pulse length of the alarm/control contactis fixed and the frequency of the delivered pulses increases inproportion to the system error, as set by the proportional band.Diaphragm metering pumps must have a remote pulse inputcapability in order to utilize this function.Pulse-frequency control in the AX460 analyzer operates bypulsing a relay on for 300ms and off for a period of timedetermined by the pulse frequency. The pulse frequency (PFr) isadjustable between 1 and 120 pulses per minute. The greaterthe difference between the measured variable and the set pointthe greater the pulse frequency.ExampleIf the pulse frequency is set at 120 pulses per minute and thepercentage output is 100% then the pulse rate is 2 pulses persecond. If the percentage output is reduced to 50%, the pulserate falls to one pulse per second.Time Proportioning ControlOutput = 0%Permanently De-energizedBi-directional ControlAs well as single set point control for both acid and baseaddition, the AX460 analyzer can be configured withindependent controllers.To avoid control overlap, a minimum of 0.5pH difference (ordeadband) between the set points is essential. The differencebetween the set points varies depending upon the application.Control of each set point can be configured independently aseither P or PI control in this mode. The setting of proportionalband or integral action can also be different for each set point.EnergizedOutput = 50%De-energized0.3s 0.7msEnergizedOutput = 100%0.3s 0.2s 0.3s 0.2sDe-energizedPulse Frequency = 120 pulses per minutePulse-frequency Proportional Control100%ControlOutputLowSet PointHighSet PointPower Failure RecoveryIn the event of a power failure the user can configure the controlmode to be Auto, Manual or Last. This optimizes controlconditions on power-up to ensure rapid recovery of processcontrol.0%0pH14Bi-directional Control5

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4SpecificationpH/Redox (ORP) – AX460 and AX466InputsOne or two* pH or mV inputs and solution earthOne or two* temperature sensorsEnables connection to glass or enamel pH and reference sensorsand Redox (ORP) sensors*AX466 onlyInput resistanceGlass >1 x 10 13 ΩReference 1 x 10 13 ΩRange–2 to 16pH or –1200 to +1200mVMinimum spanAny 2pH span or 100mVResolution0.01pHAccuracy0.01pHTemperature compensation modesAutomatic or manual Nernstian compensationRange –10 to 200°C (14 to 392°F)Process solution compensation with configurable coefficientRange –10 to 200°C (14 to 392°F)adjustable –0.05 to +0.02%/°C (–0.02 to +0.009%/°F)Temperature sensorProgrammable Pt100, Pt1000 or Balco 3kΩCalibration RangesCheck value (zero point)0 to 14pHSlopeBetween 40 and 105% (low limit user-configurable)Electrode Calibration ModesCalibration with auto-stability checkingAutomatic 1 or 2 point calibration selectable from:ABBDINMerckNISTUS Tech2 x user-defined buffer tables for manual entry,2-point calibration or single-point process calibrationConductivity – AX416 OnlyRangeProgrammable 0 to 0.5 to 0 to 10,000µS/cm(with various cell constants)Minimum span10 x cell constantMaximum span10,000 x cell constantUnits of measureµS/cm, µS/m, mS/cm, mS/m, MΩ-cm and TDSAccuracyBetter than ±0.01% of span (0 to 100µS/cm)Better than ±1% of reading (10,1000µS/cm)Operating temperature range–10 to 200°C (14 to 392°F)Temperature compensation–10 to 200°C (14 to 392°F)Temperature coefficientProgrammable 0 to 5%/°C and fixed temperature compensationcurves (programmable) for acids, neutral salts and ammoniaTemperature sensorProgrammable Pt100 or Pt1000Reference Temperature25°C (77°F)DisplayTypeDual 5-digit, 7-segment backlit LCDInformation16-character, single line dot-matrixEnergy-saving functionBacklit LCD configurable as ON or Auto-Off after 60sLogbook*Electronic record of major process events and calibration dataReal-time clock*Records time for logbook and auto-manual functions*Available if option board is fitted6

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4Relay Outputs – On/OffNumber of relaysThree supplied as standard or five with option board fittedNumber of set pointsThree supplied as standard or five with option board fittedSet point adjustmentConfigurable as normal or failsafe high/low or diagnostic alertHysteresis of readingProgrammable 0 to 5% in 0.1% incrementsDelayProgrammable 0 to 60s in 1s intervalsRelay contactsSingle-pole changeoverRating 5A, 115/230V AC, 5A DCInsulation2kV RMS contacts to earth/groundAnalog OutputsNumber of current outputs (fully isolated)Two supplied as standard or 4 with option board fittedOutput ranges0 to 10mA, 0 to 20mA or 4 to 20mAAnalog output programmable to any value between0 and 22mA to indicate system failureAccuracy±0.25% FSD, ±0.5% of reading (whichever is the greater)Resolution0.1% at 10mA, 0.05% at 20mAMaximum load resistance750Ω at 20mAConfigurationCan be assigned to either measured variable oreither sample temperatureDigital CommunicationsCommunicationsProfibus DP (with option board fitted)Control Function – AX460 OnlyController TypeP, PI, PID (configurable)Control OutputsOutputCan be assigned a maximum of two relays, two analog outputsor one of eachAnalogCurrent output control (0 to 100%)Time proportioning cycle time1.0 to 300.0s, programmable in increments of 0.1sPulse frequency1 to 120 pulses per minute, programmable in increments of1 pulse per minuteController actionReverse, direct or bi-directional (programmable)Proportional band0.1 to 999.9%, programmable in increments of 0.1%Integral action time (Integral reset)1 to 7200s, programmable in increments of 1s (0 = Off)Derivative0.1 to 999.9s programmable in increments of 0.1s,available only for single set point controlAuto/ManualUser-programmableAccess to FunctionsDirect keypad accessMeasurement, maintenance, configuration, diagnostics andservice functionsPerformed without external equipment or internal jumpersSensor Cleaning FunctionConfigurable cleaning action relay contactContinuousPulse in 1s on and off timesFrequency5 minutes to 24 hours, programmable in 15 minute increments upto 1 hour then in 1 hour increments for 1 to 24 hoursDuration15s to 10 minutes, programmable in 15s increments up to1 minute then in 1 minute increments up to 10 minutesRecovery period30s to 5 minutes, programmable in 30s increments7

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4…SpecificationMechanical DataWall-/Pipe-mount versionsIP66/NEMA4XDimensions 192mm high x 230mm wide x 94mm deep(7.56 in. high x 9.06 in. wide x 3.7 in. deep)Weight 1kg (2.2 lb)Panel-mount versionsIP66/NEMA4X (front only)Dimensions 96mm x 96mm x 162mm deep(3.78 in. x 3.78 in. x 6.38 in. deep)Weight 0.6kg (1.32 lb)Cable Entry TypesStandard 5 or 7 x M20 cable glandsNorth American 7 x knockouts suitable for 1 /2 in. Hubble glandPower SupplyVoltage requirements85 to 265V AC 50/60 Hz24V AC or 12 to 30V DC (optional)Power consumption

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4Overall DimensionsDimensions in mm (in.)R10(0.4)210 (8.27)192 (7.56)96 (3.78)61mm (23/8in.) ODVertical or HorizontalPost150 (5.9)175 (6.9)192 (7.56)Ø6.50(0.26)25 (1)23 (0.9)25 (1)94 (3.7)22.5 22.5(0.88) (0.88)45 (1.77) 45 (1.77)67.5 (2.66) 67.5 (2.66)Wall-/Pipe-mount VersionPipe-mount DetailDimensions in mm (in.)91.60 (3.60)137.50 (5.41) 25 (1) 96 (3.77)91.60 (3.60)96 (3.77)5.40 (0.21)Panel-mount Version9

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4Electrical ConnectionsWall-/Pipe-mount VersionPanel-mount VersionTerminal Block ATerminal Block C(Analog Option Board)Terminal Block C(Analog Option Board)Terminal Block BCommonThird LeadTemperatureCompensatorEarth (Ground)StudTerminal block AL LiveN NeutralE EarthA4 CA5 NC Relay 1A6 NOA7 CA8 NC Relay 2A9 NOA10 CA11 NC Relay 3A12 NOA13 + Analog output 1A14 —A15 + Analog output 2A16 —Terminal Block ATerminal Block BTerminal Block C(Analog Option Board)C1 Not usedC2 Not usedC3 Profibus – DP AC4 Profibus – DP BC5 Profibus EarthC6 Not usedC7 CC8 NC Relay 4C9 NOC10 CC11 NC Relay 5C12 NOC13 + Analog output 3C14 —C15 + Analog output 4C16 —Terminal Block B(see table below)B1B2B3B4B5B6B7B8B9B10B11B12B13B14B15B16T erminal Block BpH/Redox (ORP)pH/Redox (ORP)SensorB Sensor A w ithout Solution Earth†w ith Solution Earth†Conductivity1 9Temperature Compensator common* Temperature Compensator common* Temperature Compensator commonLink 1 & 2 / 9 & 10**Link 1 & 2 / 9 & 10**Link 1 & 2 / 9 & 10**2 10T emperature Compensator third lead*TemperatureCompensator third lead*Temperature Compensator third lead3 11T emperature Compensator*TemperatureCompensator*Temperature Compensator4 12NotapplicableReferenceElectrodeScreen5 13NotusedN ot usedCell (Cell Electrode)6 14R eference ElectrodeS olution Earth†Cell (Earth Electrode)7 15S creen*Screen*Not used8 16Glass/MetalElectrodeGlass/MetalElectrodeNot used*If fitted.**When a 2-wire Pt100, Pt1000 or BALCO temperature compensator is fitted.†Solution Earth also referred to as Ground Rod.10

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4Ordering InformationSingle and Dual Input AnalyzersModels AX460, AX466 & AX416First Process Variable (PV1)C onductivity, 0 to 10,000µ S/cmConductivity, 0 to 1,999mS/cmConductivity USPpH/Redox (ORP)Dissolved OxygenS econd Process Variable (PV2)*No second process variable –C onductivity, 0 to 10,000µ S/cmConductivity, 0 to 1,999mS/cm**Conductivity USPpH/Redox (ORP)Dissolved OxygenEnclosure Typesfor pH/Redox (ORP) and ConductivityselectWall-mount IP66/NEMA 4X, GeneralWall-mount –Pipe-mountcable glands fittedWall-mount NEMA 4X/IP66, North AmericanWall-mountPipe-mountfor PID control of PV1AX4X X X X X 0 XPanel-mount, UniversalPanel-mount**5Advanced Functions & CommunicationsBasic (2 current outputs + 3 relays)Advanced (4 current outputs + 5 relays + logbook)Profibus DP, basic (2 current outputs + 3 relays)**Profibus DP, advanced (4 current outputs + 5 relaysPower Supply85 to 265V24V AC/1285 to 265V24V AC/12AC 45 to 65Hzto 30V DC (auto-selection)AC 45 to 65Hz (tropicalized)†to 30V DC (auto-selection, tropicalized)†+ logbook)**Reserved0ManualEnglish1French2Italian3German4Spanish5* When ordering units with a second process variable (PV2) the code digit for PV2 in the order code number must be equal to, or greater than,thecode digit for PV1, e.g. AX416permissible,AX46 1 not permissible.**Profibus DP not available in panel-mount housing when 0 to 1,999mS/cm is selected as Second Process Variable (PV2).† Check factory for availability of tropicalization.1356801356812670123012311

Single and Dual Input Analyzers for pH/Redox (ORP)Models AX460, AX466 & AX416SS/AX4PH_4ABB has Sales & Customer Supportexpertise in over 100 countries worldwidewww.abb.comThe Company’s policy is one of continuous productimprovement and the right is reserved to modify theinformation contained herein without notice.Printed in UK (05.04)© ABB 2004SS/AX4PH Issue 4ABB LimitedOldends Lane, StonehouseGloucestershire, GL10 3TAUKTel: +44 (0)1453 826661Fax: +44 (0)1453 829671ABB Inc.Analytical Instruments9716 S. Virginia St., Ste. EReno, Nevada 89521USATel: +1 775 850 4800Fax: +1 775 850 4808