Infrared analyzer with improved calibration

Details Infrared analyzer with improved calibration Infrared analyzer with improved calibration

1990-05-18

1991-05-07

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2502521, 250339, 250345, 250349, G01D 1800, G01N 2161

Patent

active

050139207

ABSTRACT:
An improved infrared analyzer is provided wherein an unknown specimen gas can be subjected to a measuring infrared ray and a comparative infrared ray to provide resulting signals. The system can be initially calibrated when a zero gas state is initially achieved in the sample cell, and correction factors are achieved by holding the zero gas instrument signal and an output difference between a zero gas comparison signal and the measuring signal for subsequent processing of the actual measurement of the specimen gas to provide a calibrated output signal representative of the concentration of the unknown gas.

REFERENCES:
patent: 4673812 (1987-06-01), Yoneda
patent: 4684805 (1987-08-01), Lee et al.
patent: 5255627 (1985-01-01), Krempl et al.

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