Temperature compensated Bourdon tube gauge

Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation

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Details

73714, 73743, 374143, G01L 704, G01L 1904

Patent

active

046825010

ABSTRACT:
A temperature-compensated Bourdon tube gauge for indicating a parameter of a pressurized fluid, including a support structure, a Bourdon tube having an open fixed end receiving the fluid and a free closed end carrying an indicating member, a dial member carrying a parameter scale disposed along the path of motion of the indicating member, and a temperature-responsive element for moving the dial member in accordance with a sensed temperature such that the indicating member indicates the fluid parameter on the dial member scale. The temperature-responsive element comprises a bimetallic element connected between the support structure and the dial member. The bimetallic element may be connected to the dial member by a lever having a "variable fulcrum" which varies along the length of the lever in accordance with the shape of a cam with which the lever is maintained in contact.

REFERENCES:
patent: 2239221 (1941-04-01), Dimmock
patent: 2387909 (1945-10-01), Ingham, Jr.
patent: 3004434 (1961-10-01), Heise
patent: 3127771 (1964-04-01), Diehl
patent: 3302460 (1967-02-01), Hennecke et al.
patent: 3641820 (1972-02-01), Bissell
patent: 3815417 (1974-06-01), Smialowicz
patent: 4143545 (1979-03-01), Sitabkhan

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