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US 7,003,404 B2Granted
Control method for moisture meter, control program for moisture meter, record medium recording control program for moisture meter and moisture meter
AssigneeA&D Company, Limited
InventorsNaoto Izumo, Yuji Fukami
Life of this patent
Estimating the term…
Abstract
According to the invention, the heating temperature is sequentially raised gradually to detect a parameter of a time function indicating the change of moisture percentage, and according to the parameter, the optimum heating temperature is calculated. Further, the required mass of a sample is calculated from the measurement accuracy set by an operator and the measurement accuracy of the mass.
Claims11
A control method for a moisture meter, comprising:
- heating a sample by sequentially raising a heating temperature to detect a time rate of change of moisture percentage for the sample, said time rate of change of moisture percentage being detected by measuring a change of mass of the sample during heating;
- detecting at least one value of a pre-determined parameter of a time function related to said time rate of change of moisture percentage;
- and
- determining and selecting an optimum heating temperature for the sample in accordance with the detected value of said parameter by determining a first value of the parameter at a subsequent heating temperature using a second value of the parameter at an immediately preceding heating temperature, comparing the first and second values, and in response to the comparison, determining and selecting the immediately preceding heating temperature as the optimum heating temperature.
1 more element
A machine-readable medium having stored thereon a plurality of executable instructions, the plurality of instructions comprising instructions to:
- heat a sample by sequentially raising a heating temperature to detect a time rate of change of moisture percentage for the sample, said time rate of change of moisture percentage being detected by measuring a change of mass of the sample during heating;
- detect at least one value of a pre-determined parameter of a time function related to said time rate of change of moisture percentage;
- and
- determine and select an optimum heating temperature for the sample in accordance with the detected value of said parameter.
1 more element
A moisture meter, comprising:
- a controller for heating a sample by sequentially raising a heating temperature to detect a time rate of change of moisture percentage for the sample, said time rate of change of moisture percentage being detected by measuring a change of mass of the sample during heating using a load sensor and an analog-to-digital converter;
- said controller detecting at least one value of a pre-determined parameter of a time function related to said time rate of change of moisture percentage, and determining and selecting an optimum heating temperature, using a temperature sensor, for the sample in accordance with the detected value of said parameter.
Dependencies are inferred from the claim text.