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Title: MASS SPECTROMETER LEAK

Abstract

An improved valve is described for precisely regulating the flow of a sample fluid to be analyzed, such as in a mass spectrometer, where a gas sample is allowed to "leak" into an evacuated region at a very low, controlled rate. The flow regulating valve controls minute flow of gases by allowing the gas to diffuse between two mating surfaces. The structure of the valve is such as to prevent the corrosive feed gas from contacting the bellows which is employed in the operation of the valve, thus preventing deterioration of the bellows.

Inventors:
Issue Date:
OSTI Identifier:
4116980
Patent Number(s):
2956771
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
NSA Number:
NSA-15-007600
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-61
Country of Publication:
United States
Language:
English
Subject:
ENGINEERING AND EQUIPMENT; CONFIGURATION; CONTROL SYSTEMS; CORROSION; DIFFUSION; FLUID FLOW; GASES; LABORATORY EQUIPMENT; MASS SPECTROMETERS; SAMPLING; SURFACES; VALVES; WIND

Citation Formats

Shields, W R. MASS SPECTROMETER LEAK. United States: N. p., 1960. Web.
Shields, W R. MASS SPECTROMETER LEAK. United States.
Shields, W R. Tue . "MASS SPECTROMETER LEAK". United States.
@article{osti_4116980,
title = {MASS SPECTROMETER LEAK},
author = {Shields, W R},
abstractNote = {An improved valve is described for precisely regulating the flow of a sample fluid to be analyzed, such as in a mass spectrometer, where a gas sample is allowed to "leak" into an evacuated region at a very low, controlled rate. The flow regulating valve controls minute flow of gases by allowing the gas to diffuse between two mating surfaces. The structure of the valve is such as to prevent the corrosive feed gas from contacting the bellows which is employed in the operation of the valve, thus preventing deterioration of the bellows.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {10}
}