How can we test a temperature sensor Minicpt ?

The Minicpt sensors are PT100 with 4 wires shielded : 2 red wires, 2 white wires and 1 yellow-green wire that is the cable shield connection

To test a sensor, you have to use a multimeter in ohmmeter position.

At the time of the test, the sensor must not be connected to the measuring channel.

Measure between two white wires : you have to get a few ohms value in your measuring device ( 2 or 3 ohms depending on the cable length)

Measure between two red wires : you have to get a few ohms value in your measuring device ( 2 or 3 ohms depending on the cable length)

Measure between a white wire and a red wire : you should get around 100 ohms ( depending on the temperature)

For information : 100 ohms at 0°C , 108ohms at 20°C , 92 ohms at -20°C

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