Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1984-08-31
1986-05-27
Myracle, Jerry W.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
7386481, G01C 2500
Patent
active
045907897
ABSTRACT:
An improved remote calibration is disclosed for calibrating a gas sensing device. A housing is provided which receives the gas sensor in an open end and a valve/diaphragm assembly in a receiving end. A plurality of openings are formed in the housing adjacent the open end to allow the ambient gas to communicate with the gas sensor. A cap is provided to define a gas chamber between the cap and the rolling diaphragm. The valve is carried by the diaphragm. A gas inlet in the cap admits pressurized gas, driving the diaphragm and the valve toward the open end of the housing to obstruct the ambient gas from the gas sensing device. An orifice is provided in the diaphragm and communicates with a bore in the valve. Calibration gas passes through the orifice and the bore in the valve and floods the region around the gas sensor.
REFERENCES:
patent: 3421362 (1965-04-01), Schaeffer
patent: 3729979 (1973-05-01), Wilberg et al.
patent: 4177667 (1979-12-01), Rolf et al.
patent: 4205550 (1980-06-01), Swanson
patent: 4279142 (1981-07-01), McIntyre
patent: 4489590 (1984-12-01), Hadden
Data Sheet for Model RC-1 Remote Calibrator, dated Jan., 1982, for General Monitors, Inc.
General Monitors, Inc. "United States Price List-Remote Calibration RC-1 System, Effective Mar. 31, 1982".
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