Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1992-09-11
1994-11-15
Raevis, Robert
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
G01F 2500
Patent
active
053636899
ABSTRACT:
A leak detector calibration device for generating a leak standard and for calibrating leak detecting instruments. The leak detector calibration device includes a flow control valve, a transducer, an amplifier module, and a display module, all operating from a 9 volt supply. This configuration is a compact, hand-held instrument for use in a manufacturing environment. The device is highly accurate and uses a mass flow sensor sensitive to measurement of low flow rates. The need for fragile glass orifices or clumsy soap film flowmeters present used to calibrate leak detecting instruments is eliminated. In addition, the device can be used not only to generate a leak standard to calibrate positive flow leak detectors, but can also be used to generate a leak standard for negative flow or vacuum type leak detectors.
REFERENCES:
patent: Re33076 (1989-10-01), Sigiura
patent: 900479 (1908-10-01), Burhorn
patent: 2123656 (1938-07-01), Miller
patent: 3015232 (1962-01-01), Schnoll
patent: 3783248 (1974-01-01), Sugden, Jr.
patent: 3813940 (1974-06-01), Sommer
patent: 4096746 (1978-06-01), Wilson et al.
patent: 4244217 (1981-01-01), Ledbetter
patent: 4565092 (1986-01-01), Kompelien
patent: 4658829 (1987-04-01), Wallace
patent: 4671097 (1987-06-01), Kurki et al.
patent: 4811252 (1989-03-01), Furuse
patent: 4945754 (1990-08-01), Wissman, Jr. et al.
patent: 4991426 (1991-02-01), Evans
patent: 5072416 (1991-12-01), Francisco, Jr. et al.
patent: 5076099 (1991-12-01), Hisanaga et al.
patent: 5092158 (1992-03-01), Tuma et al.
patent: 5146782 (1992-09-01), Rasmussen
Product specification for "DP-176BL & DP-176SBL Series Battery Operated 3-1/2 Digit Backlit LCD Voltage Input DPM", by Acculex, A Metrabyte Company, p. 18, undated.
Design Specification for "Brooks NRS* Needle Control Valves Models 8503 and 8504", 3 pp., dated Feb., 1984, copyright by Brooks Instrument Div., Emerson Electric Co., Hatfield, Pa.
"Installation Instructions for Microbridge Mass Airflow Sensor", PK 8854, 4 pp., by Micro Switch, a Honeywell Division, Mar., 1990.
Balke David J.
Hoffmann Jacques E.
Intertech Development Company
Raevis Robert
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