G - Physics – 01 – N
Patent
G - Physics
01
N
354/30, 73/71, 3
G01N 33/46 (2006.01)
Patent
CA 1176753
Abstract of the Disclosure A sample box is provided for selectively receiving, retaining and discharging samples of particulate material during a plurality of successive measurement cycles. A data processor receives a plurality of input signals re- presenting the measured weight of the sample box and the measured temperature, conductivity, and moisture (based on electrical impedance) of each sample. Using supplier-related data stored in a memory and entered through a keyboard and display, the data processor determines, for each sample, its wet bulk den- sity, its electronic oven dry percentage from the moisture based on electrical impedance, and its density oven dry percentage from the wet bulk density. From the density and electronic oven dry percentages and the temperature of the sample, the data processor determines if the sample contains frozen moisture and also determines if the electronic and density oven dry percentages are based on valid input data. If both oven dry percentages are based on valid input data and if the sample does not contain frozen moisture, the data pro- cessor selects an average of the density and electronic oven dry percentages as a verified oven dry percentage. If both oven dry percentages are valid and frozen moisture is detected, the data processor determines a degree of frozen- ness factor for the sample from the density and electronic oven dry percentages, and selects a quantity equal to the density oven dry percentage, modified by the degree of frozenness, factor as the verified oven dry percentage. If one of the oven dry percentages is invalid and the other is valid, the data pro- cessor selects the valid oven dry percentage as the verified oven dry percent- age.
398195
Hokanson Jon V.
Miller Christopher S.
Pope Daniel F.
Ab Bonnierforetagen
Fetherstonhaugh & Co.
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