Thermometers with switch contacts

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.

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WIKA Bulgaria EOOD

Tel.:
+359 2 8213810
Fax:
+359 2 8213813
info@wika.bg

FAQ

What is meant by switching function?

Under switching function, we mean the opening or closing of an electrical circuit. Normally-closed contacts interrupt a circuit on rising temperature (clockwise); normally-open contacts close a circuit on rising temperature (clockwise).

How does an expansion thermometer work?

The measured value registration is made through the liquid-filled measuring system which consists of a temperature probe, capillary and Bourdon tube. All three components combine to form a closed tube system. The internal pressure in the system changes with the adj ... More

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