Apparatus for contactless measurement of temperature

Details Apparatus for contactless measurement of temperature Apparatus for contactless measurement of temperature

1985-02-22

1986-06-17

Frankfort, Charles

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

374135, G01K 1306, G01K 116

Patent

active

045952990

ABSTRACT:
Apparatus for measuring the temperature of an elongated movable object such as a wire or wire-rod exiting from a draw plate during a wire drawing process. The wire is located in a column-like chamber which is defined by two vertical walls and through which an upwardly moving flow of gas passes. A temperature sensor is mounted above and beneath the wire and the temperature difference in the gas is determined with the aid of a differential amplifier. The sensors may be thermistors or preferably thermocouples, which in the latter case are coupled with counteracting thermo-voltages for direct compensation and an output voltage proportional to the temperature difference.

REFERENCES:
patent: 2204797 (1940-06-01), Fearn
patent: 3191437 (1965-06-01), Heard, Jr.

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