Characteristic absorption

Details Characteristic absorption Characteristic absorption

1994-12-09

1996-12-17

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250345, 356437, G01N 2131, G01N 2161, G01J 3427

Patent

active

055856365

ABSTRACT:
Apparatus and methods for monitoring characteristic absorption of a substance in a mixture include applying radiation pulses with a wavelength characteristic of the substance to be measured and a wavelength uncharacteristic of the substance to a measuring path and to a reference path without the substance mixture. The difference of signals generated between the measuring path and the reference path are conditioned to provide a measurement value.

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patent: 5113073 (1992-05-01), Szepan
patent: 5149983 (1992-09-01), Kaiblinger
patent: 5173749 (1992-12-01), Tell et al.
patent: 5332901 (1994-07-01), Eckles et al.

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