Temperature compensator for liquid filled pressure gauge

Details Temperature compensator for liquid filled pressure gauge Temperature compensator for liquid filled pressure gauge

G - Physics

01

L

73/172, 73/7, 73

G01L 19/14 (2006.01)

Patent

CA 1208037

TEMPERATURE COMPENSATION FOR LIQUID FILLED PRESSURE GAUGE Abstract of the Disclosure A liquid filled pressure gauge in which temperature induced volumetric changes imposed on the liquid fill are compensated for by a tensioned flexible diaphragm secured in a pressure-tight spaced relation on a cover plate for the gauge casing. For receiving the diaphragm pre-tensioned, the cover includes an annulus extending laterally from the cover surface with a negative draft on its circumference. By virtue of the diametral relationship between the outside diameter of the diaphragm about the draft surface of the annulus and the internal diameter of the case opening, the diaphragm incurs a friction fit as the cover is emplaced causing diaphragm tension to be increased.

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