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

To which standard are gas actuated thermometers and bimetal thermometers manufactured?

Gas actuated thermometers and bimetal thermometers are manufactured to EN 13190. If electrical connectors are built in, DIN 16196 applies.

What influence does the ambient temperature have on the measuring result?

This depends on the following parameters:
1. Ratio of the volume of the probe (tube) to the measuring line and Bourdon tube (rule-of-thumb: 99:1)
2. Length of the measuring line (capillary) - the longer it is, the more the influence
3. Magnitude of t ... More

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