Apparatus and method for infrared optical electronic qualitative

Details Apparatus and method for infrared optical electronic qualitative Apparatus and method for infrared optical electronic qualitative

1985-09-03

1987-03-17

Tanner, Harry

Refrigeration

With indicator or tester

Condition sensing

340631, 356 70, 356442, 250301, 250343, G01K 1300, G01N 3328

Patent

active

046497110

ABSTRACT:
An apparatus and method is provided for infrared qualitative analysis of a fluid independent of the temperature of the fluid. A first signal is generated in response to detected infrared energy passing through the fluid, and a second datum signal is provided for comparison with the first signal, wherein the second signal indicates a non-radiating state. The energy difference between the two signals is provided to a microprocessor control system for computing the fluid quality as a function of the energy difference independent of the temperature of the fluid.

REFERENCES:
patent: 3736431 (1973-05-01), Childs
patent: 4124301 (1978-11-01), Pocock
patent: 4466076 (1984-08-01), Rosenthal
patent: 4480190 (1984-10-01), Burough et al.
patent: 4490612 (1984-12-01), Tormala
patent: 4490988 (1985-01-01), Vogel et al.

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