Thermal measuring and testing – Thermal calibration system
Patent
1983-10-31
1985-07-30
Frankfort, Charles
Thermal measuring and testing
Thermal calibration system
29612, 324 74, 324115, 338 28, 338229, 364557, 364571, 374 3, 374158, 374163, 374171, G01K 1500, G01K 716
Patent
active
045318425
ABSTRACT:
A method and an apparatus for rating a thermometer probe, wherein the thermometer probe includes a small thermistor sensing element and a pair of conductors connected with the thermistor contacts and being supported upon a substrate. With the thermistor held at a particular temperature, the electrical resistance of the thermometer probe is measured and the difference between the resistance of that probe and a standard resistance is fed to a computer which operates a laser to encode a machine-readable character on the probe representative of the difference between the measured resistance of the probe and the standard resistance. In use, the probe is inserted in a readout and the readout senses the actual resistance of the thermometer probe which is dependent upon the temperature of the thermistor. An optical reader reads the encoded character on the probe and adjusts the actual sensed resistance for the deviation of the resistance of that probe from the standard resistance, whereby the readout accurately indicates temperature sensed by each thermistor probe.
REFERENCES:
patent: 3733862 (1973-05-01), Killmeyer
patent: 4022063 (1977-05-01), West et al.
patent: 4161880 (1979-07-01), Prosky
patent: 4179745 (1979-12-01), Wuertele
patent: 4418392 (1983-11-01), Hata
Frankfort Charles
Worth W. Morris
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