WIKA

Temperature switches

For each application the right temperature switch

Temperature switches are used in a variety of industrial and technical processes. If a preset temperature is reached, then the temperature switch opens or closes a corresponding switch contact. Depending on the requirements, mechanical or electronic switches can be used. In addition to electronic temperature switches and bimetal temperature switches, WIKA's wide range also includes air velocity meters and frost protection thermostats.
FAQ
FAQ

How does a resistance thermometer work?

The electrical resistance of a resistance thermometer's sensor changes with the temperature. As the resistance of measuring resistors to EN 60751 (2009-05) increases with rising temperature, we refer to it as PTC (Positive Temperature Coefficient ...

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What minimum insertion lengths are recommended, as a rough guide, for protection tubes in order to minimise the heat dissipation error?

for gaseous media: 15 ... 20 x protection tube diameter
for liquid media: 5 ... 10 x protection tube diameter
for solid media: 3 ... 5 x protection tube diameter
(these standard values are only valid for static mediaThe gap between the protection tube a ... more