Moisture content measuring system

Details Moisture content measuring system Moisture content measuring system

1989-05-05

1990-10-23

Yasich, Daniel M.

Thermal measuring and testing

Thermal gravimetric analysis

73 73, 177245, G01N 2556

Patent

active

049647342

ABSTRACT:
In order to make it possible to measure the moisture content of coal on an on-line basis with a high degree of precision, a moisture content measuring system including a sample container for holding a sample, a weighing instrument having a turntable adapted to rotate with the sample container placed thereon, an A/D converter responsive to a signal from the weighing instrument, a calculator responsive to a signal from the A/D converter for calculating the moisture content of the sample, an indicator responsive to a signal from the calculator and a microwave generating and irradiating apparatus for heating the sample, is improved. The improvements reside in that the system includes a hot gas generator for heating the sample with hot gas at a low temperature, and a dehumidified dry air circulating means for removing moisture from the sample.

REFERENCES:
patent: 3292417 (1966-12-01), Hayden et al.
patent: 4165633 (1979-08-01), Raisanen
patent: 4616425 (1986-10-01), Burns
patent: 4681996 (1987-07-01), Collins et al.
patent: 4889201 (1989-12-01), Oldendorf et al.

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