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 a magnetic snap-action contact (model 821)?

The magnetic snap-action contact is a mechanical physical contact for switching loads of up to 30W 50VA. The signal output is achieved either ahead of or behind the movement of the actual value pointer. To close the circuit, the contact pin of the mo ...

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