Apparatus for the rapid determination of the moisture content of

Details Apparatus for the rapid determination of the moisture content of Apparatus for the rapid determination of the moisture content of

1986-02-18

1988-06-07

Lall, Parshotam S.

Boots, shoes, and leggings

364567, 73 76, 324 61R, 177 25, G01G 716, G01N 502, G01R 2726

Patent

active

047501430

ABSTRACT:
A device for determining the moisture content of a material which includes a micro wave heating unit (1) for heating a sample of the material which is under investigation and a weighing device (3) for weighing the sample during heating and providing signals representing a series of measurements of the weight of the sample at specific times. The weighing device is connected to a processing unit (4) which is a microprocessor and which includes a computer (9) which produces signals representing the loss of weight of the sample in the course of heating and which computes the parameters of a asymptotic function and which represents the loss of weight of the sample in the course of time. There is also a calculator (11) for determining the differences between two asymptotic values, and a comparator (12) for comparing the differences with a reference value representing the acceptable uncertainty in regard to the moisture content of the material. There is also a restoring device for restoring the asymptotic values when the differences reach values which are equal to or less than the reference value.

REFERENCES:
patent: 3909598 (1975-09-01), Collins et al.
patent: 3978325 (1976-08-01), Goldstein et al.
patent: 4165633 (1979-08-01), Raisanen
patent: 4168623 (1979-09-01), Thomas, Jr.
patent: 4316384 (1982-02-01), Pommer et al.
patent: 4485284 (1984-11-01), Pakulis
patent: 4651285 (1987-03-01), Collins et al.

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