WIKA

Thermometers with switch contacts

Display and monitor limit values

Wherever the process temperature has to be indicated locally and, at the same time, limit values must be monitored, thermometers with switch contacts find their application. The switch contacts make or break the circuit dependent upon the pointer position of the indicating measuring instrument. If the reading is significantly above or below a set value, they trigger an alarm, hence also the term “alarm contact”. The instruments are also suitable for starting, stopping or switching processes.
FAQ
FAQ

What is the maximum permissible temperature for thermowells and protection tubes?

The maximum temperature depends on the materials used and the standards which must be met.  So, for example, a standard stainless steel can be used in air up to about +900 °C, the maximum operating temperature is approximately +600 °C and an approval ...

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