Gas sensing assembly

Details Gas sensing assembly Gas sensing assembly

1994-05-16

1997-04-29

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

73 3105, 73 3107, 204432, 422 83, G01N 2700

Patent

active

056246412

ABSTRACT:
A gas sensing assembly from which a number of gas sensing devices can be constructed for determining the concentration of an active gas in a gas mixture. The assembly comprises a self-contained sensing unit including a sensing element at which active gas reacts and is consumed, an output signal being produced proportional to the rate of reaction of active gas. A number of different control members are provided each defining a respective gas diffusion barrier, each member being separately securable to the sensing unit and detachable therefrom while leaving the sensing unit intact to enable gas sensing devices of different sensitivities to be constructed from the same sensing unit.

REFERENCES:
patent: 4225842 (1980-09-01), Schlesselman et al.
patent: 4633704 (1987-01-01), Tantram et al.
patent: 5092980 (1992-03-01), Maurer et al.

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