Low power photoionization detector (PID)
US11193909B2 · kind B2 · utility
0Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2016 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Mar 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/161
- WIPO fieldMeasurement
- WIPO sectorInstruments
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%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.