Portable battery-operated ambient air analyzer

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

1989-03-31

1990-03-27

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2504931, G01N 2135

Patent

active

049123297

ABSTRACT:
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, operated at a temperature of less than 1000.degree. C.

REFERENCES:
patent: 3904880 (1975-09-01), Benz et al.
patent: 4437005 (1984-03-01), Ophoff et al.
patent: 4560875 (1985-12-01), Crowder

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