Combined mass flow/pitot tube meter
US4959990A · kind A · utility
13Cited by
13References
9Claims
0Family size
Inventor
Key dates
| Filing date | Apr 10, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Apr 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mass flow meter probe having an upstream tube and a downstream tube that extends into a main gas flow conduit is disclosed. The sensor for the mass flow measurement is located in the bore of a housing connecting the tubes and by incorporating the sensor into a valve that can block flow between the tubes, the mass flow meter can be calibrated in the field. The probe can be used as differential pressure device for flow measurments, when the valve is closed. A means for cleaning pressure ports is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.