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:
Dec. 07, 2021
Filed:
Aug. 09, 2016
Applicant:
Honeywell International Inc., Morris Plains, NJ (US);
Inventors:
Assignee:
Honeywell International Inc., Morris Plains, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/64 (2006.01); H01J 49/16 (2006.01); H01J 27/24 (2006.01);
U.S. Cl.
CPC ...
G01N 27/64 (2013.01); H01J 27/24 (2013.01); H01J 49/161 (2013.01);
Abstract
A photoionization detector is disclosed. The photoionization detector comprises a detector electrode that outputs a signal, an ultraviolet lamp, a lamp driver communicatively coupled to the ultraviolet lamp and configured to turn the ultraviolet lamp on and off in response to a control input, and a controller that is communicatively coupled to the output signal of the detector electrode and to the control input of the lamp driver, that outputs an indication of gas detection based on the output signal of the detector electrode, and that turns the lamp driver on and off with an on duty cycle of less than 10%.