Patent · US Active

Shielding for electrodes in photoionization detector

US10942061B2 · kind B2 · utility

1Cited by

4References

13Claims

0Family size

Assignee

HONEYWELL INTERNATIONAL INC. · US

Inventors

Bo Chen · Morristown, US
Yuzhong Wang · Palo Alto, US
Qidao Lin · Morristown, US
Guangli Xie · Shanghai, CN
Zhanghua Wu · Morristown, US

Key dates

Filing date	Dec 20, 2016
Grant date	Mar 9, 2021
Priority date	—
Expiry date	Dec 20, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01J2001/444
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A photoionization detector (100) comprises an ultraviolet radiation source (130); one or more detector electrodes (204 and 205); and a shielding material (206) located between the ultraviolet radiation source (130) and the one or more detector electrodes (204 and 205), wherein the ultraviolet radiation (240) does not directly impinge on any part of the one or more detector electrodes (204 and 205). A method for gas detection comprises exposing a photoionization detector (100) to an environment containing a target gas; and shielding the one or more detector electrodes (204 and 205) from direct impingement from the ultraviolet radiation (240) via the shielding material (206).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.