Pressure measuring sub-assembly and amplifier support therefor

Details Pressure measuring sub-assembly and amplifier support therefor Pressure measuring sub-assembly and amplifier support therefor

G - Physics

01

L

73/7

G01L 7/04 (2006.01)

Patent

CA 1131038

Abstract of the Disclosure A pressure measuring sub-assembly for a pressure gauge is comprised of a Bourdon tube providing total support for the gauge amplifier operably connected to drive an output pointer shaft. The sub-assembly can be installed as a unit in a gauge housing providing a self-supporting inlet connection for the Bourdon tube. In a preferred embodiment, the amplifier is supported on the displacement portion of the Bourdon tube and in the process of manufacture a swageable clamp is loosely placed near the fixed end of the Bourdon tube to loosely receive the secureable end of an elongated wire actuator. The opposite actuator end extends into the motion path of the amplifier to define a pivot axis therefor. When calibrating the unit for linearity, the Bourdon tube is first pressurized to one-half of rated operating capacity, and while maintaining calibra- tion pressure the clamp is subjected to a bi-directional swaging force which selectively crimps the clamp to secure it to the Bourdon tube and the actuator to the clamp.

336841

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