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:
Aug. 19, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventor:
Stephen M Ernst, Colorado Springs, CO (US);
Assignee:
Nighthawk Systems, Inc., Colorado Springs, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73-103 ; 36457104 ; 36457105 ; 73-107 ;
Abstract
A method and apparatus to automatically calibrate a carbon monoxide detector placed in an environment having a known concentration of carbon monoxide. The monitor is placed in a calibration mode in which it reads the output signal from the sensor and normalizes the output signal to a convenient scale. The normalized reading is used to compute a calibration coefficient. The calibration coefficient is stored in a non-volatile memory integrated with the carbon monoxide monitor.