Differential pressure gauge

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The WIKA portfolio of differential pressure gauges includes standard designs, as well as increased corrosion-resistant models required for chemical and other processing applications:

Differential pressure gauges measure the difference between two pressures. Common applications for differential pressure indicators include: monitoring  filter contamination; providing level measurement in closed vessels; indicating overpressure measurement in clean rooms; monitoring flow measurement of gaseous and liquid media; and providing control of pumping plants.

In differential pressure gauges, pressure elements and tube forms vary (diaphragm element, capsule element, Bourdon tube, etc.). This enables scale ranges of 0 ... 0.007 psi up to 0 ... 14,000 psi to be covered, with a very high single and dual-sided and also bi-directional overpressure safety up to 5,800 psi.

Differential pressure gauge with integrated working pressure indication

In addition to standard variants of differential pressure gauges, WIKA also offers pressure gauges with integrated working pressure indication. For filter and pump monitoring, working pressure often plays a major role along with the differential pressure. In the DELTA-plus differential pressure gauge, a working pressure indication is therefore integrated. The working and differential pressure can be read simultaneously on on-site displays. An additional measuring and sealing point is thus no longer necessary.

Differential pressure gauge

Function of a differential pressure gauge

The media chambers of a differential pressure gauge are separated from each other by the pressure element. If the two pressures being measured are the same, there is no movement through the pressure element and no pressure is indicated. As soon as the two measured values are different to each other, thus one of the pressures is higher or lower, then a differential pressure will be indicated. The transmission of the pressure element displacement and the indication of the pressure is achieved via a mechanical movement.

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