WIKA T12 - Handbuch (Seite 20)

GB
3211517.07
07/2010
GB/D
20 WIKA operating instructions temperature transmitter T12
6.2.2 Sensors
Schematic representation / configuration
6. Commissioning, operation
Resistance thermometer (RTD) and resistance sensor
It is possible to connect an resistance thermometer (e.g. to
DIN EN 60751) in a 2-, 3- or 4-wire connection method. Configure the
input of the transmitter to match with the actual method of connection
used. Otherwise you will not fully exploit the possibilities of connec-
tion lead compensation and, as a result, possibly cause additional
measuring errors (see chapter „6.2 Configuration“).
Thermocouples (TC)
Make sure that the thermocouple is connected with the correct
polarity. If the lead between the thermocouple and the transmitter
needs to be lengthened, only use thermal or compensation cable in
accordance with the type of thermocouple connected.
Configure the input of the transmitter appropriately for the thermo-
couple type and the cold junction actually used, otherwise measure-
ment errors may be caused (see chapter "6.2 Configuration").
Should the cold junction compensation be operated with
an external resistance thermometer (2-wire connection),
connect this to terminals  and .
Thermocouple Resistance thermometer/
linear resistance
in
4-wire 3-wire 2-wire
CJC with
external
Pt100/Ni100 1)
Input
mV sensor
4 ... 20 mA loop
CJC
internal
1) Connect sensor (Pt100 / Ni100) for external cold junction compensation between terminal 1 and 4.