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:
Sep. 29, 1998
Filed:
Mar. 12, 1997
Applicant:
Inventor:
Helmut Mitter, Hellmansodt, AT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01R / ;
U.S. Cl.
CPC ...
7333504 ; 73 2905 ; 324664 ; 324689 ;
Abstract
A method for determining the absolute humidity of air by aid of a capacitive sensor and a temperature sensor as well as a heating element. The sensor temperature is changed upon reaching a predetermined humidity limit value. In order to eliminate the risk of falsified measuring values and to enable long-time stable and accurate measuring also in the high-humidity range, the determination of the humidity of air until reaching the predetermined humidity limit value is effected by evaluating the value measured for the capacity of the sensor. Upon reaching a predetermined limit value, the temperature of the sensor is controlled to a constant sensor capacity by heating and is evaluated.