pressure gauge / Bourdon tube / dial / process

The measurement method of our vacuum gauges is based on the principle of the Bourdon spring. The vacuum gauge is made up of section tubes in special copper alloy, where one end of the tube is welded to the threaded pin of the vacuum-pressure gauge, to form a single body with it. The other closed end is kept free. It tends to shift from the initial position due to the Bourdon effect as the vacuum or pressure inside increases.

The vacuum pressure measurement is determined by the movement of the free end of the spring. To ensure easy reading, the movement is amplified with the help of a connection lever and transmitted to the pointer. All these things are enclosed in a sturdy metal case that contains the dial and a pointer. These things can be seen through a glass. These kind of vacuum gauges are available in different versions with coaxial or radial connectors with built-in flange, filled with glycerine or dry.