Battery powered gas level indicator

Details Battery powered gas level indicator Battery powered gas level indicator

1979-07-19

1981-02-17

Woodiel, Donald O.

Measuring and testing

Gas analysis

Gas chromatography

338 34, 422 98, G01N 2704

Patent

active

042507375

ABSTRACT:
A gas level indicator incorporates two Taguchi-type sensing elements, one of which is to receive air to be sampled and the other of which is insulated therefrom. A comparator circuit receives the outputs of the two elements, and an indicator actuated by the output of the circuit announces the result of the comparison. Preferably, both sensing elements are mounted in a single housing, and an elongated pipe and a fan or aspirator provided to form a probe for drawing air to be sampled from a remote position to the one element.

REFERENCES:
patent: 4147513 (1979-04-01), Bienkowski et al.

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