Selective gas detector

Details Selective gas detector Selective gas detector

1985-05-31

1987-03-03

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250338, 250345, 250347, 250349, 250353, 356435, 356437, G01N 2135

Patent

active

046477772

ABSTRACT:
A selective infra-red detector is used to determine the amount of a selected gas present in a gas sample. A beam of infra-red energy is passed through a gas sample and into the selective infra-red detector. An outer annular portion of the beam is reflected from a paraboloidal mirror onto a first focal point, while an inner annular portion of the beam passes through a chamber containing a fluid which will absorb the spectral wavelengths of the selected gas and is reflected by a spherical mirror onto a second focal point. Separate infra-red energy detectors are positioned near the first and second focal points to measure the infra-red energy. The difference or ratio between the infra-red energy measured by each infra-red energy detector is a measure of the amount of selected gas present in the gas sample.

REFERENCES:
patent: 2703844 (1955-03-01), Miller
patent: 2849618 (1958-08-01), Smith
patent: 3364351 (1968-01-01), Palmer et al.
patent: 3588496 (1971-06-01), Snowman
patent: 3743430 (1973-07-01), Riggs
patent: 3790289 (1974-02-01), Schmidt
patent: 3838925 (1974-10-01), Marks
patent: 3849005 (1974-11-01), Girard et al.
patent: 3872315 (1975-03-01), Boll
patent: 3916195 (1975-10-01), Burch et al.
patent: 3935463 (1976-01-01), Jacobsen
patent: 3954342 (1976-05-01), Boeke
patent: 3970387 (1976-07-01), Faulhaber et al.
patent: 3998384 (1976-12-01), Martin et al.
patent: 4126396 (1978-11-01), Hartmann et al.
patent: 4152075 (1979-05-01), Rellstab et al.
patent: 4171909 (1979-10-01), Kramer et al.
patent: 4180734 (1979-12-01), Gedeon
patent: 4205913 (1980-06-01), Ehrfeld et al.
patent: 4306152 (1981-12-01), Ross et al.

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