Correction for parasitic voltages in resistance thermometry

Details Correction for parasitic voltages in resistance thermometry Correction for parasitic voltages in resistance thermometry

1999-02-26

2000-12-12

Gutierrez, Diego

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

G01K 724

Patent

active

061588873

ABSTRACT:
An apparatus employing a method for measuring the temperature of a sensor (Rx) having a resistance which varies in accordance with the temperature of the sensor, using a switching sequence to apply a parasitic voltage correction signal to the input of an amplifier in the measurement circuit whereby the sensor generates an offset response signal which is amplified and adjusted to substantially minimize the amplified offset response signal. The temperature of the sensor is calculated from the amplified response signal in accordance with a predetermined algorithm.

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patent: 5351010 (1994-09-01), Leopold
patent: 5876122 (1999-03-01), Eryurek
A.A. Redkokasha E. A., "Resistance-Voltage Converters for SM-1 and SM-2 Computers" Measurement Techniques, vol. 27, No. 8, Aug. 1984, New York, pp. 744-745, XP-002071397.

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