Measuring and testing – Instrument proving or calibrating – Fluid pressure
Patent
1996-12-23
1998-11-17
Williams, Hezron E.
Measuring and testing
Instrument proving or calibrating
Fluid pressure
73 166, G01L 2700
Patent
active
058378812
ABSTRACT:
The invention relates to a pressure source calibrator which allows testing and calibrating of a pressure gauge or other device mounted in a particularly difficult-to-access area. The calibrator is lightweight, portable and operates with an external source of pressurized fluid, such as a cartridge containing pressurized fluid. A variable pressure chamber formed within the calibrator body is connected to a master gauge and to a pressure gauge to be calibrated, while pressure in the chamber is regulated by a vernier adjustment knob extending into the chamber. The calibrator provides for the use of an optional pre-pressurization process for preventing thermal instability of the pressurized fluid admitted into the calibrator body. Pre-pressurization is carried out by admitting warmer outside air into the variable pressure chamber by one or more pistons moving within one or more piston chambers.
REFERENCES:
patent: 909950 (1909-01-01), Schreidt
patent: 2207898 (1940-07-01), Schoenecke
patent: 2600324 (1952-06-01), Rappaport
patent: 3067614 (1962-12-01), Rich
patent: 3164979 (1965-01-01), Siegel
patent: 3262305 (1966-07-01), Dawley
patent: 3557602 (1971-01-01), Frantz
patent: 3826125 (1974-07-01), Cotton
patent: 4333331 (1982-06-01), Mann
patent: 4512179 (1985-04-01), Umble et al.
patent: 4566308 (1986-01-01), Powell
patent: 4766765 (1988-08-01), Ezekoye
Fayyaz Nashmiya S.
Williams Hezron E.
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