Non-contact, zero-flux temperature sensor

Details Non-contact, zero-flux temperature sensor Non-contact, zero-flux temperature sensor

1996-12-17

1999-03-16

Barlow, John

Data processing: measuring, calibrating, or testing

Calibration or correction system

Zeroing

702 99, 702130, 374164, 374179, G01J 512, G01K 1300

Patent

active

058842357

ABSTRACT:
A method and system are disclosed for measuring a temperature of a body in a non-contact mode based on heat flux measurement. The system includes a temperature measurement apparatus to be positioned in close proximity to a body for measuring the temperature of the body. The temperature measurement apparatus comprises a thermally conducting element, a first and a second temperature sensor, and a temperature modulation arrangement. The first and second temperature sensors are mounted in the conducting element and each measures a temperature of the conducting element. The temperature modulation arrangement modulates the temperature of the conducting element until the temperatures at the first and the second temperature sensors are substantially the same. When these temperatures are equalized, heat flux into the conducting element is zero and the temperature of the conducting element represents the temperature of the body. The apparatus thus enables accurate non-contact temperature measurement of a body.

REFERENCES:
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patent: 5054936 (1991-10-01), Fraden
patent: 5106200 (1992-04-01), Hosokawa
patent: 5294200 (1994-03-01), Rall
patent: 5409547 (1995-04-01), Watanabe et al.
patent: 5464284 (1995-11-01), Rall
patent: 5645349 (1997-07-01), Fraden
patent: 5730528 (1998-03-01), Allison et al.

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