Dew point and bubble point measurement
US6223588A · kind A · utility
22Cited by
13References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0427
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for detecting the dew point or bubble point phase transition in fluid. The apparatus used comprises a piezoelectric crystal sensor and a signal analyser. The phase transition of the fluid is measured by monitoring, directly or indirectly, change in the resonant frequency of the piezoelectric crystal sensor while said one of the temperature and pressure is varied, so as to detect a substantial change in said resonant frequency and/or in the rate of change in resonant frequency with change in the varying one of the temperature and pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.