Method and apparatus for a non-contact measuring of a temperatur

Details Method and apparatus for a non-contact measuring of a temperatur Method and apparatus for a non-contact measuring of a temperatur

1989-08-22

1990-09-11

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

250352, 364557, 374128, 374133, G01J 524, G01J 562

Patent

active

049557270

ABSTRACT:
In order to measure the temperature of a body (3) extensively independently of interference radiation (.theta..sub.U1), a sensor (1) is provided wherein the radiation (.theta..sub.3) of the body (3) is chopped by means of a chopper (5) between the sensor (1) and the body (3). Since extraneous radiation originates predominantly from losses at the sensor (1) as well as from frictional heat of the chopper (5) in case a mechanical chopper (5) is provided, the housing temperature of the sensor (1) is detected for correction purposes on the side of the chopper (5) facing the sensor (1) by means of an additional sensor (13). Around and in the zone of the travel path of the mechanical chopper (5), by means of a third sensor (15), the ambient temperature of the chopper is detected, again for correction purposes.

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EPO Application Publ., No. 0,098,402, published 1/18/84, "Temp. Measuring Apparatus", Noda Tomimitusu, 19 pages.

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