Drying balance with evaluation circuit for determining the end o

Details Drying balance with evaluation circuit for determining the end o Drying balance with evaluation circuit for determining the end o

1989-01-24

1989-12-26

Miller, Jr., George H.

Weighing scales

Computer

Electrical

177245, 73 73, 364568, G01G 1940, G01G 2300, G01N 2556

Patent

active

048892017

ABSTRACT:
A drying balance is disclosed with a means (11) for supplying energy for the drying of material to be weighed located on the balance scale (6,16) and with a digital evaluating unit (23,24,25) for calculating the moisture content from the measured weight loss of the specimen and for determining the end point of the drying in which balance the digital evaluating unit (23,24,25) calculates the inflection point from the chronological course of the weight loss and derives the criterion for determining the final point therefrom. The criterion for the final point consists in that the slope of the drying curve drops below a certain value which is derived from the coordinates or the slope of the drying curve at the inflection point.

REFERENCES:
patent: 4131011 (1978-12-01), Ling
patent: 4165633 (1979-08-01), Raisanen
patent: 4168623 (1979-09-01), Thomas, Jr.
patent: 4316384 (1982-02-01), Pommer et al.
patent: 4750143 (1988-06-01), Heitz et al.

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