Method for measuring the concentration of a combustible component
US4474051A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Mar 16, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0011
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of measuring a combustible component in a liquid or gas employs a gas having a high oxygen content, instead of air or an inert gas, as the carrier gas to thereby improve drastically the scope and accuracy of measurement by a semicondutor gas sensor. The carrier gas having a high oxygen content is supplied into a combustible component sampler formed from a gas-permeable membrane and disposed in the liquid or gas to be tested so that the combustible component may be diffused into the carrier gas through the gas-permeable membrane. The carrier gas entraining the combustible component therein is introduced into a detector having a semiconductor gas sensor, in which the combustible component is detected, and its concentration is determined continuously or intermittently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.