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 Merna Tehnika d.o.o.

Tel.:
+381 11 2763 722
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+381 11 2753 674
info.rs@wika.com

FAQ

What are suitable materials for thermowells for negative temperatures?

The first choice for high-temperature applications should always be stainless steel, such as 1.4404 or 316L. (Approval per AD2000 W10 down to -270 °C) Carbon steels should be considered carefully in detail, through the effect of the drop-off effect.

What is the maximum insertion length for a thermowell?

For multi-piece thermowells, the maximum length is limited by the manufactured lengths of the tubes, which is about 5-6 meters.  One piece thermowells are made of solid material and limited by the production length of the drill hole, which, for each product is ... More

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