Refrigerant impurity analyzer
US5498873A · kind A · utility
4Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1994 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Nov 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/1702
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable refrigeration gas analyzer employs infrared spectroscopy to detect adulterant refrigerant gases in existing R12 refrigeration systems. The analyzer can detect contaminants such as R134a, R22, and butane in concentration as low as 1% by volume. A rugged opto-acoustical infrared narrow band sensor is suitable for field use in the repair of refrigeration systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.