WIKA T32. S Series - Page 33

GB
11258421.0901/2012GB/D
WIKAoperatinginstructionstemperaturetransmitterT32.xS 33
9.3 Sensors
9.3.1 Schematic representation, conguration
Thermocouple
Resistancethermometer/
resistancesensor
in
4-wire3-wire2-wire
CJCwith
externalPt100
Input
Sensor1
Sensor2
Sensor1
Sensor2
9. Electrical connections
9.3.2 Resistance thermometer (RTD) and resistance sensor
ItispossibletoconnectanRTDresistancethermometer(e.g.per
EN60751)oranyresistancesensorina2-,3-or4-wireconnection
methodandtoconnecttwoidenticalresistancethermometers,having
thesamemeasuringranges,inatwo-wirecircuit.Conguretheinput
ofthetransmittertomatchwiththeactualmethodofconnectionused.
Otherwiseyouwillnotfullyexploitthepossibilitiesofconnectionlead
compensationand,asaresult,possiblycauseadditionalmeasuring
errors(seechapter6.3"Conguration").
9.3.3 Thermocouples (TC)
Itispossibletoconnectoneortwoidenticalthermocouples.Make
surethatthethermocoupleisconnectedwiththecorrectpolarity.If
theleadbetweenthethermocoupleandthetransmitterneedstobe
extended,onlyusethermalorcompensationcableappropriateforthe
connectedthermocoupletype.
Conguretheinputofthetransmitterappropriatelyforthe
thermocoupletypeandthecoldjunctioncompensationactually
used,otherwisemeasurementerrorsmaybecaused(seechapter
6.3"Conguration").
Duplex
thermocouple
duplexmV-
Sensor
Potentio-
meter
Dualresistance
thermometer/
Dualresistance
sensor
in
2+2-wire