Gas monitor

Details Gas monitor Gas monitor

1977-03-02

1978-09-05

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

G01T 118

Patent

active

041123026

ABSTRACT:
A gas monitor comprising means for detecting changes in electron flow between two electrodes caused by absorption of the electrons by an electron capture gas flowing between the electrodes. A carrier gas is supplied to the detecting means at a predetermined velocity. A sample of the gas to be measured is added to the carrier gas by a valve means at a predetermined time which gas sample contains a trace of a first type of electron capture gas. The carrier gas together with any gas sample flows through a column means which slows down the velocity of any other type of electron capture gas in the sample with respect to the velocity of the first type of electron capture gas. The gas then passes through the detector wherein the electron capture gas causes a decrease in the electron flow between the electrodes. Means are provided for measuring the maximum decrease in the electron flow caused by the first type of electron capture gas and means are coupled to the measuring means for indicating the maximum decrease.

REFERENCES:
patent: 3176135 (1965-03-01), Lovelock
patent: 3714421 (1973-01-01), Josias et al.

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