Differential pressure indicators

Details Differential pressure indicators Differential pressure indicators

G - Physics

01

L

G01L 13/02 (2006.01) G01L 19/12 (2006.01)

Patent

CA 2168805

A differential pressure indicator has a piston across which inlet and outlet pressures are applied with a spring preventing movement of the piston until a predetermined differential pressure is exceeded. At this point, a port is opened to allow the inlet pressure to be applied to an indicator button to move the indicator button from a retracted position to an operative extended position to indicate that the pressure differential has been exceeded. The use of fluid pressure to operate the indicator button applies a large force to the indicator button and allows it to be securely held in the inoperative position to guard against accidental movement by high G-forces.

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