Measuring apparatus
US5443794A · kind A · utility
21Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1991 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | May 6, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/204165
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to apparatus for measuring the concentration of a volatile component in a gas and in particular, but not exclusively, to breath alcohol testing apparatus. In such apparatus 10, a pressure transducer 15 is provided to detect the ambient pressure during test. This pressure is used to modify the output of a fuel cell 11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.