Gas detectors

Details Gas detectors Gas detectors

1984-06-28

1986-08-19

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

G01N 2704

Patent

active

046062190

ABSTRACT:
A carbon monoxide gas detector comprises a housing consisting of two enclosures 10 and 12 having ports in the wall thereof to provide a tortuous path for air entering the inner enclosure 12. A gas cell transducer 16 connected to an electrical circuit 18 provides signals indicative of gas concentration. The detector is powered from a remote supply via wires 22 and 26 and provides gas concentration signals via a wire 24 to a remote central station with a fail-safe feature wherein failure of the circuit or the detector will provide signals interpreted as dangerous gas concentrations.

REFERENCES:
patent: 1876706 (1932-09-01), MacCain et al.
patent: 2441677 (1948-05-01), Stallsmith
patent: 3041590 (1962-06-01), Lucci
patent: 3603954 (1971-09-01), Takeuchi
patent: 4088986 (1978-05-01), Boucher
patent: 4390869 (1983-06-01), Christen et al.
patent: 4464653 (1984-08-01), Winner
patent: 4517161 (1985-05-01), Gravina et al.

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