Temperature Gauges
Temperature gauges work using gas-actuated, bimetal or expansion principles. They measure temperatures ranging from -200 to +700 °C. All temperature gauges are suitable for thermowell installation.
Temperature gauges determine the thermal condition of a uniform substance. The sensing element needs close contact with the measured body. Common measurement techniques depend on physical and material properties that change with temperature.
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Bimetal temperature gauge
Bimetal temperature gauges operate with a measuring system in the form of a helical or spiral tube. Bimetal temperature gauges are available with a scale range of -70 ... +600 °C in accuracy classes 1 and 2 in accordance with EN 13190.
Expansion temperature gauge
An expansion temperature gauge consists of a temperature sensor, a capillary and a Bourdon tube. The measuring system itself is filled with a liquid. Using capillaries from 500 to 10,000 mm long, measurements can also be taken from remote measuring points. The scale ranges for expansion temperature gauges lie between -40 ... +400 ° C with class 1 and 2 accuracies in accordance with EN 13190.
Gas-actuated temperature gauge
With a gas-actuated temperature gauge the stem, the capillary and the Bourdon tube are joined together into one unit. The instrument is filled with inert gas. Gas-actuated temperature gauges are available with scale ranges between -200 ... +700 °C in accuracy class 1.