skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Long-life leak standard assembly. [Patent application]

Abstract

The present invention is directed to a portable leak standard assembly which is capable of providing a stream of high-purity reference gas at a virtually constant flow rate over an extensive period of time. The leak assembly comprises a high pressure reservoir coupled to a metal leak valve through a valve-controlled conduit. A reproducible leak valve useful in this assembly is provided by a metal tube crimped with a selected pressure loading for forming an orifice in the tube with this orifice being of a sufficient size to provide the selected flow rate. The leak valve assembly is formed of metal so that it can be baked-out in a vacuum furnace to rid the reservoir and attendent components of volatile impurities which reduce the efficiency of the leak standard.

Inventors:
; ;
Issue Date:
OSTI Identifier:
6255152
Assignee:
Dept. of Energy TIC; ERA-06-035339; EDB-81-117058
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 47 OTHER INSTRUMENTATION; FLOWMETERS; CALIBRATION STANDARDS; LEAK DETECTORS; LEAK TESTING; STANDARDS; MASS SPECTROMETERS; VACUUM GAGES; DEGASSING; DESIGN; GASES; LEAKS; VALVES; CONTROL EQUIPMENT; EQUIPMENT; FLOW REGULATORS; FLUIDS; MEASURING INSTRUMENTS; METERS; PRESSURE GAGES; SPECTROMETERS; TESTING; 420200* - Engineering- Facilities, Equipment, & Techniques; 440300 - Miscellaneous Instruments- (-1989)

Citation Formats

Basford, J.A., Mathis, J.E., and Wright, H.C. Long-life leak standard assembly. [Patent application]. United States: N. p., 1980. Web.
Basford, J.A., Mathis, J.E., & Wright, H.C. Long-life leak standard assembly. [Patent application]. United States.
Basford, J.A., Mathis, J.E., and Wright, H.C. Wed . "Long-life leak standard assembly. [Patent application]". United States.
@article{osti_6255152,
title = {Long-life leak standard assembly. [Patent application]},
author = {Basford, J.A. and Mathis, J.E. and Wright, H.C.},
abstractNote = {The present invention is directed to a portable leak standard assembly which is capable of providing a stream of high-purity reference gas at a virtually constant flow rate over an extensive period of time. The leak assembly comprises a high pressure reservoir coupled to a metal leak valve through a valve-controlled conduit. A reproducible leak valve useful in this assembly is provided by a metal tube crimped with a selected pressure loading for forming an orifice in the tube with this orifice being of a sufficient size to provide the selected flow rate. The leak valve assembly is formed of metal so that it can be baked-out in a vacuum furnace to rid the reservoir and attendent components of volatile impurities which reduce the efficiency of the leak standard.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {11}
}