Temperature measuring method and apparatus

Details Temperature measuring method and apparatus Temperature measuring method and apparatus

1980-09-05

1982-11-16

Ruehl, Charles A.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

374136, 374165, 374179, G01K 704

Patent

active

043589570

ABSTRACT:
A thermoelectric temperature sensing apparatus in which the thermoelectric reference junction is not maintained at a constant temperature but instead heat is supplied to it or extracted from it at a predetermined, preferably constant, rate by a heater or cooler. The open circuit output voltage of the apparatus is referenced to this predetermined rate of heat supply or extraction to determine the temperature of the other thermoelectric junction. Where the heater or cooler is input responsive, the output voltage of the thermoelectric circuit is referenced to the heater or cooler input.

REFERENCES:
patent: 2352247 (1944-06-01), Blau et al.
patent: 2986890 (1960-01-01), Bevans
patent: 3099923 (1960-01-01), Benzinger
patent: 3332285 (1964-10-01), Cook
patent: 3336804 (1967-08-01), Poppendiek et al.
patent: 3354720 (1967-08-01), Hager, Jr.
patent: 3617886 (1971-11-01), Werme
patent: 3715923 (1973-02-01), Hornbaker et al.
patent: 3834237 (1974-09-01), Robertson

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