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 temperature gauge 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 remote capillaries from 500 … 10,000 mm long, measurements can also be taken from remote measuring locations. The scale ranges for expansion temperature gauges lie between -40 … +400 °C with class 1 and 2 accuracies in accordance with EN 13190.