Portable battery-operated ambient air analyzer

Details Portable battery-operated ambient air analyzer Portable battery-operated ambient air analyzer

1987-03-30

1989-04-04

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2504931, 362390, G01N 2135

Patent

active

048188751

ABSTRACT:
A portable battery-operated ambient air analyzer comprising an electrically-energized incandescent source of infra-red radiation producing a beam passing through an air sample to a sensor. The infra-red source is surrounded by an explosion-proof enclosure to prevent an explosion internally of the enclosure being propagated out to the atmosphere. The incandescent source is a self-supporting filamentary coil having no interior core or mandrel. The coil is formed of a metal composition including aluminum, chromium and iron.

REFERENCES:
patent: 3709600 (1973-01-01), Ganshorn
patent: 3904880 (1975-09-01), Benz et al.
patent: 4297578 (1981-10-01), Carter
patent: 4370553 (1983-01-01), Waycaster et al.
patent: 4437005 (1984-03-01), Ophoff et al.
patent: 4489367 (1984-12-01), Herron et al.
patent: 4529881 (1985-07-01), Ceurvels et al.
patent: 4560875 (1985-12-01), Crowder

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