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. If the temperature changes, the internal pressure of the thermometer will change as well. The pressure is transferred via a tube to a pointer shaft and thus the temperature value is indicated on the scale. 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.

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