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 does one mean by the active length of a thermometer?

The active length of a thermometer is the length over which the thermometer effectively averages the temperature, through in-and outflows of the heat.

Do gas-actuated thermometers fall within the Pressure Equipment Directive and may an appropriate CE marking be applied?

 

Gas-actuated thermometers fall within the scope of the 2014/68/EU directive (previously PED 97/23/EC), without additional adapted thermowell as “pressure accessories” and also in the non-fitted state or fitted within a thermowell as &l ... More

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