Gas analyzer

Details Gas analyzer Gas analyzer

1978-12-22

1981-03-17

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250373, G01J 100, G01J 142

Patent

active

042569648

ABSTRACT:
A gas analyzer includes a first conduit for the supply of gas to be tested, a second conduit for the supply of a standard gas, first and second cells, a light source for directing light rays through the first and second cells, and a detector for receiving the light rays after passing through the cells. There is provided a gas flow change-over device connected to the first and second conduits for alternating at fixed intervals between a first gas supply arrangement wherein fixed amounts of gas to be tested and the standard gas are simultaneously supplied to the first and second cells, respectively, and a second gas supply arrangement wherein the fixed amounts of the gas to be tested and the standard gas are simultaneously supplied to the second and first cells, respectively.

REFERENCES:
patent: 3449566 (1969-06-01), Kolb et al.
patent: 3725702 (1973-04-01), Schaefer
patent: 4180733 (1979-12-01), Veda

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