Thermometer

Details Thermometer Thermometer

1995-03-16

1999-01-19

Fulton, Christopher M.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

374128, 374142, 368 11, G01J 502, G01K 1300

Patent

active

058607404

ABSTRACT:
A thermometer is provided with a ROM, in which a program for controlling a CPU and plural predetermined emissivity data are memorized, and is further provided with a RAM having plural registers, in which plural emissivity data are entered and memorized. One of these memorized emissivity data is selected and used for measuring a temperature of an object. The selected emissivity data and an output of a temperature sensor are amplified by an amplifier, and are supplied to an A/D convertor to obtain digital data. The CPU processes the digital data to obtain temperature data, and displays the obtained temperature data. With this structure of the thermometer, emissivity data can be set with a simple operation.

REFERENCES:
patent: 4447884 (1984-05-01), Wada
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patent: 4895454 (1990-01-01), Kammleiter et al.
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patent: 5094544 (1992-03-01), Ignatowicz
066525 (Minolta Camera Co., Ltd.), Mar. 13, 1989!. 158229 (Mitsubishi Electric Corp.) Jun. 1, 1992!. 087026 (Mitsubishi Electric Corp.) Mar. 27, 1990!.
"Portable Infared Pyrometer," Model 05-630, The Infrared Temperature Handbook by Omega Engineering, Inc., Stamford, CT, pp. 21, 116, 117 (1994).
Bernard, B., "Determining Emissivity," Instruments & Control Systems, vol. 37, #5, pp. 87-89 (May 1964).
McGee, T., "Principles and Methods of Temperature Measurement," p. 333, John Wiley & Sons (1988).

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