Measuring apparatus

Details Measuring apparatus Measuring apparatus

1990-09-07

1993-07-27

Envall, Jr., Roy N.

Boots, shoes, and leggings

36441302, 36441308, 356325, 356422, 356423, 128677, G06F 1500, G01J 342, G01J 352, A61B 502

Patent

active

052315762

ABSTRACT:
The present invention is an apparatus for measuring the constituent concentration of a specimen on the basis of the color change in a test material housed in a test piece, which has reacted because of the specimen. The apparatus irradiates the test material which is a test piece loaded in the apparatus's main body and detects the intensity of the light reflected by the test material. A detection signal detected in the above way is sampled in a time period before and after the measurement timing at which the test material changes in color because of the specimen. An average value of the sampled detection signals is determined. The constituent concentration of the specimen is computed by referring to a stored conversion table on the basis of the average value determined in the above way.

REFERENCES:
patent: 3833864 (1974-07-01), Kiess et al.
patent: 4171913 (1979-10-01), Wildy et al.
patent: 4407959 (1983-10-01), Tsuji et al.
patent: 4420564 (1983-12-01), Tsuji et al.
patent: 4731726 (1988-03-01), Allen, III
patent: 4871258 (1989-10-01), Herpichboehm et al.
patent: 5016283 (1991-05-01), Bacus et al.
Patent Abstracts of Japan vol. 13, No. 102 (P-841) Mar. 10, 1989.

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