Selective leak-detector for natural gas

Details Selective leak-detector for natural gas Selective leak-detector for natural gas

1983-02-22

1985-03-26

Anderson, Bruce C.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250343, 250338, G01F 174, G01J 558

Patent

active

045075581

ABSTRACT:
An improved detector for combustible gases and which is able to discriminate between natural gas (methane and ethane) and other sources of methane (e.g. swamp gas, petrochemical and automotive) or other combustible gases by measuring the characteristic methane/ethane ratio of natural gas, based on infrared absorption of methane and ethane, in combination with another non-specific combustible gas detector.

REFERENCES:
patent: 2462995 (1949-03-01), Ritzmann
patent: 2720594 (1955-10-01), Hutchins
patent: 2741703 (1956-04-01), Munday
patent: 2938117 (1960-05-01), Schmidt
patent: 3851176 (1974-11-01), Jeunehomme et al.
patent: 4288062 (1981-09-01), Gupta et al.
patent: 4401967 (1983-08-01), Miwa et al.
patent: 4447397 (1984-05-01), Anouchi et al.
E. E. Crisman and H. J. Gerritson, "A Methane Detector Based on Tuned Infrared Emitting Semiconductor Diodes", GRI Symposium on Current Research on Methane Detection and Measurement, Brown University, Chicago, Ill., (Aug. 17, 1979), pp. 177-198.

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