S428A Manual - Danaher Specialty Products

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DYNAPAR brand PRODUCT MANUAL: Series S428A 1/8 DIN Process IndicatorNoise Suppression at SourceUsually when good wiring practices arefollowed, no further noise protection isnecessary. Sometimes in severe electricalenvironments, the amount of noise is sogreat that it has to be suppressed atsource. Many manufacturers of relays,contactors etc supply ‘surge suppressors’which mount on the noise source. Forthose devices that do not have surge suppressorssupplied, Resistance-Capacitance(RC) networks and/or Metal Oxide Varistors(MOV) may be added.Contacts:- Arcing may occur across contactswhen they open and close. This resultsin electrical noise as well as damageto the contacts. Connecting a properlysized RC network can eliminate this arc.For circuits up to 3 amps, a combination ofa 47 ohm resistor and 0.1 microfarad capacitor(1000 volts) is recommended. Forcircuits from 3 to 5 amps, connect two ofthese in parallel.Inductive coils:- MOVs are recommendedfor transient suppression in inductive coils,connected in parallel and as close as possibleto the coil. Additional protection may beprovided by adding an RC network acrossthe MOV.Contact noise suppressionTransient Suppression with Inductive Coils2.04Manual Number: 702683-0001 Rev.: A August, 2006 Installation
DYNAPAR brand PRODUCT MANUAL: Series S428A 1/8 DIN Process IndicatorSensor Placement (Thermocoupleor RTD)If the temperature probe is to be subjectedto corrosive or abrasive conditions, it mustbe protected by an appropriate thermowell.The probe must be positioned to reflect trueprocess temperature:1. In a liquid media - the most agitated area2. In air - the best circulated areaCAUTION:The placement of probes into pipework some distance from the heatingvessel leads to transport delay, whichresults in poor control.Thermocouple Wire IdentificationChartThe different thermocouple types are identifiedby their wire colors, and where possible,the outer insulation (sheath) as well.There are several standards in use throughoutthe world.+ Wire SheathThe table below shows the wire and sheathcolors used for most common thermocoupletypes. The format used in the table is:+ Wire Color- Wire ColorSheathColorFor a two wire RTD a wire link should beused in place of the third wire. Two wireRTDs must only be used with lead lengthsless than 3 meters. Use of three wire RTDsis strongly recommended.TypeJThermocouple Wire ColorsInternationalIEC584-3USA ANSIMC 96.1BritishBS1843FrenchNFC 42-324+* Black White Yellow Yellow RedBlackBlack- WhiteBlackBlackRed Blue Black BlueGermanDIN 43710BlueTK+ Brown Blue White Yellow RedBrownBlueBlueBlue- White Red Blue Blue Brown+ Green Yellow Brown Yellow RedGreenYellowRedYellow-* White Red Blue Purple GreenBrownGreenN+ Pink Orange OrangePinkOrange- White Red BlueOrangeBR & S+ Grey Grey RedGreyGrey- White Red Grey+ Orange Black White Yellow RedOrangeGreenGreenGreen- White Red BlueGreenWhiteGreyWhiteC (W5)+ White- RedWhite*= Wire is magneticManual Number: 702683-0001 Rev.: A August, 2006 Installation 2.05
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Manual Number: 702683-0001 Rev.: A
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S428A Manual - Danaher Specialty Products

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