Analog and Differential Pressure Gauges

The needle pressure gauge is a fluid pressure measuring instrument.
The dial pressure gauges are direct meters that measure the pressure by means of an elastic primary element, the deformation of which provides an indication of the pressure directly on a graduated scale or on a dial.
The elastic element, depending on the pressure field to be measured, can be of the bellows, capsule, membrane, tubular spring type.

In the case of applications in critical conditions with aggressive, toxic fluids, temperatures outside the limits of use, fluid separators are applied to the pressure gauges which isolate the elastic element from the process fluid.