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Pressure gauges

150 Bourdon tube pressure gauges

The main series of pressure gauges are the bourdon tube pressure gauges. Pressure element is a bourdon tube. Its open end Cu-alloy soft soldered in the connector. Under the force of the inner pressure the bourdon tube bends up to a bigger radius. The effected pass is carried forward over the pull rod to the motion work.

Bourdon tube pressure gauges are used in gaseous and liquid mediums ex 0,6 bar.

150 Capsule pressure gauges

This movement is used for measurement of lower pressures and in gaseous mediums between 1 and 600 mbar. The pressure element consists of to metal diaphragms, which are closed to a capsule. Inducing a pressure the capsule bends outwards. The bending is carried forward over a lever bar to the movement.

150 Diaphragm pressure gauges

The pressure element is a thin, round metal diaphragm with concentrical waves, which are fixed between two flanges. If the diaphragm is stressed partially with a pressure it bends. By a lever the pass effects on the movement.

According to the strength and caliber of the diaphragm different pressure ranges between 16 mbar and 40 bar are reached. Diaphragm pressure gauges are more resistant against shocks and vibrations than bourdon tube pressure gauges.

By using adequate materials diaphragm pressure gauges are useable in any kind of gases, steams and fluids. In executions with opened flanges this pressure gauges are also suited for measuring semifluid mediums.

150 Differential pressure gauges

The differential pressure measurement allows the measurement of two different pressures. It is used in gaseous and liquid, but non-high-viscous and non-cristallizing mediums. The measurement has to be chosen accordant to the maximum occuring pressure.

The maxium over-all pressure and the differential pressure must be declared in the inquiry.