Absolute radiation thermometer

Details Absolute radiation thermometer Absolute radiation thermometer

1996-10-30

1999-01-19

Gutierrez, Diego F. F.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

374130, 374133, G01J 508, G01J 506, G01J 662

Patent

active

058607412

ABSTRACT:
An absolute radiation thermometer capable of evaluating the absolute value of infrared radiation power emitted from a target and received by a radiation sensor by means of electrical calibration, and calculating the temperature of the target basing on the responsive signal generated in the radiation sensor. To solve "Microphonic" problem, two identical sensors connected in parallel with the polarized orientations of their pyroelectric layers being in opposite directions so as to cancel the piezoelectric signals generated in the two sensors are used. Further, by using a floating power supply, which is isolated from the system power supply of the thermometer, for performing electrical heating, power supply noise can be greatly reduced.

REFERENCES:
patent: 3453432 (1969-07-01), McHenry et al.
patent: 3877308 (1975-04-01), Taylor
patent: 4441023 (1984-04-01), Doctor et al.
patent: 4797840 (1989-01-01), Fraden
patent: 5127742 (1992-07-01), Fraden
patent: 5165796 (1992-11-01), Gat et al.
patent: 5567052 (1996-10-01), Yoshiike et al.

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