Thermocouples
5.3 Compensation for the reference junction temperature
Analog value processing
90
Function Manual, 06/2014, A5E03461439-AC
Connecting thermocouples and thermal resistors
The example below shows:
●
An analog module with thermal resistor as reference temperature transmitter and
●
Two analog modules with thermocouple as reference temperature receivers.
Connect the thermocouples to the supply lines at the reference junction, either directly or
with compensating lines. Wire the supply lines to the corresponding terminals of the module.
You may use cables made of any material to wire the thermal resistor to the module
terminals.
①
Thermocouple
②
Compensating line (same material as thermocouple)
③
Copper supply cable, for example
④
Thermal resistor (RTD)
⑤
Reference junction
Figure 5-8
Example: Connecting thermocouples/thermal resistors for group 0 compensation
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