The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 2000
Filed:
Nov. 16, 1998
Francesco Pompei, Boston, MA (US);
Exergren Corporation, Watertown, MA (US);
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.