Resistance sensor

The most commonly used is the Pt 100 Ohm probe

The resistance probe offers a measurement of great accuracy and very good long-term stability.

A Pt 100 Ohm probe corresponds to a platinum resistance whose initial value is 100 Ohms for a temperature of 0°C.
The measuring element consists of wound platinum wires whose resistance varies according to the temperature. The resistance / temperature correspondence is documented in the IEC 60751 standard.

The temperature probe is often delivered with a connection head (see photo opposite).

Measuring scale From -200 ° C to + 600 ° C
Protection tube   Stainless steel
Diameter of the immersion Up to 8 mm
Useful length of the immersion Up to 1000 mm
Connection Standard single element 3 or 4 wires or double element on request
IP protection rating Up to IP68
Electric approval ATEX explosion-proof or intrinsically safe on request
Accuracy Class A according to CEI 751 / NF EN 60751

You can find below our most frequently asked questions / answers.

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What are the advantages of a resistance probe compared to a thermocouple probe?

The choice of probe type depends on your application. A resistance probe is more accurate than the thermocouple and has a very good measurement stability. Moreover, it enjoys excellent repeatability of the measurement. See here our comparison chart.

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