Gas component detector

Details Gas component detector Gas component detector

1979-03-12

1980-11-25

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

73 27R, 338229, H01L 700

Patent

active

042361389

ABSTRACT:
A gas component detector has a detector element of a metal oxide held on one end of a ceramic body. The detector element is exposed to the gases to be detected and the electrical resistance value thereof is varied depending on the component of the gases. An electrical signal representing an electrical resistance value of the detector element is delivered through a pair of electrodes connected to the detector element and further through a pair of sub-lead-lines connected to the electrodes. The pairs of electrodes and sub-lead-lines are inserted in a pair of penetrating holes of the ceramic body after the electrodes and sub-lead-lines have been welded to each other. The ceramic body is inserted in a metal tube and the ceramic body and the metal tube are fixed to each other either by a tight surface contact or an adhesive. The openings of the pair of penetrating holes of the ceramic body at the opposite end with respect to the detector element are closed by a sealing material of an electrically insulating metal oxide.

REFERENCES:
patent: 3959765 (1976-05-01), Stewart
patent: 4001758 (1977-01-01), Esper et al.
patent: 4130797 (1978-12-01), Hattori et al.
patent: 4147513 (1979-04-01), Bienkowski et al.
patent: 4151503 (1979-04-01), Cermak et al.

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