Hydrogen sensor for fuel cell applications
US6519041B1 · kind B1 · utility
18Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/7703
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An intrinsically safe fiber optic hydrogen sensing assembly for detecting hydrogen levels in a system and/or for detecting hazardous hydrogen concentration gas leaks therefrom is disclosed. The sensor assembly preferably uses a palladium coated end of the fiber optic cable as the hydrogen sensor based upon the intensity and phase of the light reflecting off of the coated end. The assembly may be constructed to control the flow of hydrogen to the system and/or to sound an alarm indicative of leakage of hydrogen from the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.