Method for determining the end of useful life of a gas purifier and apparatus therefore
US5172066A · kind A · utility
13Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Mar 7, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/043
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method, based on the measurement of electrical resistance, and an apparatus for performing the measurement, which indicates the moment in which a gas purifier is about to loose its purification efficiency. The gas purifier can therefore be substituted before the impurity levels in the purified gas output reach undesirably high values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.