Isothermal flow controller for air sampler
US5892160A · kind A · utility
13Cited by
14References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 1998 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2276
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air or gas sampling device utilizes a small tube calibrated under isothermal conditions. The relationship of pressure at the input end of the tube to flow is plotted and stored in a microprocessor for comparison with pressure monitored during sample pumping. Pulsations in flow caused by the air or gas pump can be neutralized by a damper comprising a small chamber having a diaphragm for one wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.