Apparatus for measuring or controlling the separation ratio of gas
US4555931A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Apr 1, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0011
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for indirectly measuring or controlling the separation ratio of a gas to be measured or controlled when passing through a branch passage. A diluent gas with a known and adjustable flow rate is supplied to each of the branched passages through which the gas to be measured flows. The difference in the concentration of a specified gas in each of the branched passages is then measured. If the difference is equal to zero, then the separation ratio of the diluent gas is equal to the separation ratio of the gas to be measured. Alternatively, the separation ratio of the diluent gas may be set to a predetermined desired value and the flow of the gas to be measured controlled until the detected difference in concentration is equal to zero, at which point the separation ratio of the gas to be measured is equal to the separation ratio of the diluent gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.