Differential radiation detector probe

Details Differential radiation detector probe Differential radiation detector probe

1998-11-16

2000-04-11

Bennett, G. Bradley

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

250349, G01J 512

Patent

active

060480939

ABSTRACT:
An infrared detector is positioned in a probe having leads which connect to a standard hand-held voltmeter. The detected voltage may indicate the difference between a target temperature surface and ambient temperature. For more accurate sensing of ambient temperature, a thermocouple may be connected in series with the thermopile with one junction at the thermopile cold junction temperature and another junction sensing ambient temperature. The ambient temperature may be that temperature surrounding the infrared detector or the temperature of the environment surrounding the meter. The infrared detector may be calibrated to provide a direct reading of temperature degrees by a factor of ten on the voltage scale of the meter. To that end, multiple thermocouples may be connected in series, each with a junction responding to ambient temperature and a junction responding to thermopile cold junction temperature.

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