IMC CANSAS - Measurement with PT100 (RTD) (Type: Standard DSUB); Measurement with PT100 (RTD) (Type: LEMO)

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270 Properties of the Modules

6.4.3.2 Measurement with PT100 (RTD) (Type: Standard DSUB)

Besides thermocouples, it's also possible to connect Pt100 sensors directly in 4-wire-configuration. A

(supplementary) reference current source feeds up to four sensors connected in series jointly.

When the imc-Thermoplug is used, the connection terminals are already wired in such a way that this

reference circuit is "automatically" closed.

Example for one PT100 in 4-wire configuration

Example for two PT100 in 4-wire configuration

6.4.3.3 Measurement with PT100 (RTD) (Type: LEMO)

With the LEMO terminals at the IP65 housing SL it's only possible to connect Pt100 sensors directly in 4-

wire-configuration. A (supplementary) reference current source feeds the sensor. How to connect a

Pt100 sensor is shown below.

Connection scheme of a PT100 sensor with LEMO terminals

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