Measuring and testing – With fluid pressure – Leakage
Patent
1985-10-01
1988-04-05
Levy, Stuart J.
Measuring and testing
With fluid pressure
Leakage
G01M 320
Patent
active
047350849
ABSTRACT:
A helium mass spectrometer leak detector includes a spectrometer tube connected to the inlet of a high vacuum pump. Helium tracer gas passes in reverse direction through the high vacuum pump from the foreline to the spectrometer tube. Relatively high pressure gross leak tests are performed, while maintaining the foreline of the high vacuum pump at the required operating pressure of about 100 millitorr, by passing the tracer gas in reverse direction through one or two stages of a mechanical vacuum pump. Test port pressures up to about atmosphere can be accommodated, with only a single mechanical vacuum pump required. According to another feature, high test port pressures are accommodated using a variable flow restrictor and reverse-connected mechanical vacuum pump in combination.
REFERENCES:
patent: 2721270 (1955-10-01), Bennett
patent: 3520176 (1970-07-01), Becker
patent: 3616680 (1971-11-01), Schrader
patent: 3626760 (1971-12-01), Briggs et al.
patent: 3690151 (1972-09-01), Briggs
patent: 4204815 (1980-05-01), Le Blanc
patent: 4294106 (1981-10-01), Gevaud et al.
patent: 4472962 (1984-09-01), Mennenga
patent: 4499752 (1985-02-01), Fruzzetti et al.
Worthington, "New Developments in Trapless Leak Detection," Vacuum Technology Research/Development, Nov. 1976.
Introduction to Helium Mass Spectrometer Leak Detection, Varian Associates, Inc., 1980, pp. 26-45.
"New Dimensions in Leak Detection," Varian Brochure, Dec. 1982.
Cole Stanley Z.
Levy Stuart J.
McClellan William R.
Varian Associates Inc.
Williams Hezron E.
LandOfFree
Method and apparatus for gross leak detection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for gross leak detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for gross leak detection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2227159