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

How can one prevent the zero position of the thermometer which has already been set during the manufacturing process, from altering (drifting) in later use?

Such a drift can be anticipated through suitable heat treatment (ageing). The finished bimetallic springs, ready for installation, should be held at a temperature of 350°C to 400°C (if required, higher temperatures are also possible), but stabilised below t ... More

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