Our dial thermometers work on the bimetal, expansion or gas actuation principle. This enables scale ranges of -200 to +700 °C in different class accuracies, response times and resilience to environmental influences. Diverse connection designs, stem diameters and individual stem lengths enable a flexible measuring point design. Dial thermometers with capillaries are particularly versatile. All thermometers are suited for operation in a thermowell if necessary.

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FAQ

How does a bimetal thermometer work?

A strip made from permanently-laminated rolled sheets, made from metals having different coefficients of expansion ("bimetal"), will bend as a result of any temperature changes. The bending is roughly proportional to the change in temperature. For bimetallic strips ... More

Why is liquid damping in bimetal thermometers only possible up to medium temperatures of 250°C?

Since the filling liquid (silicone oil) in the complete thermometer (i.e. it is also present in the stem) this means the filling liquid is heated to the temperature of the medium.  This can lead to fire in the silicone oil.

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