Apparatus and a method for detecting and measuring trace gases i

Details Apparatus and a method for detecting and measuring trace gases i Apparatus and a method for detecting and measuring trace gases i

1981-01-26

1982-12-07

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

250382, 250385, G01T 118

Patent

active

043629415

ABSTRACT:
An improved drift tube wherein the high voltage electric field is generated as a function of atmospheric pressure. Such variation of the electric field provides good compensation for the effects produced by changes in atmospheric pressure. As a result, the identification of a particular compound at different altitudes is greatly simplified.

REFERENCES:
patent: 2994768 (1961-08-01), Derfler
patent: 3835328 (1974-09-01), Harris et al.
patent: 4119851 (1978-10-01), Castleman et al.
patent: 4238678 (1980-12-01), Castleman et al.

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