Method for measuring free oxygen in a combustible atmosphere
US4835108A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Oct 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/218
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detector for measuring free oxygen at ambient temperature in a combustible atmosphere which may be hazardous constructed as a differential thermocouple pair with the first thermocouple junction coated with a catalyst and the second thermocouple junction coated with a non-catalyst. Free oxygen in the combustible atmosphere reacts with the catalyst to liberate heat and thereby raise the temperature of the catalyst coated junction above that of the non-catalyst coated junction. Thus, the increase in temperature of the first thermocouple above that of the second thermocouple is indicative of the free oxygen in the combustible atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.