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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FAQ

What is the maximum length of a capillary for gas actuated thermometers?

Theoretically, the capillary of a gas-actuated thermometer can be up to 100 m long. However, a large probe volume is needed so that the gas-actuated thermometer will operate within class 1. With the expansion thermometer, the maximum length is limited to 15 metres, ... More

What is ATEX?

ATEX is a widely-used synonym for the European Union ATEX directives. The name comes form the abbreviation of the French 'Atmosphere explosible'. The directive currently includes two directives in the field of explosion protection, namely the ATEX equipment directi ... More

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