Tandem rotor turbine meter and field calibration module
US5473932A · kind A · utility
5Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1993 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Sep 22, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/13
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and an apparatus for measuring gas flow with greater reliability than earlier single-rotor and double-rotor turbine meters and dual turbine meter systems are disclosed. The apparatus comprises two independent rotors, in close proximity of each other, housed in the same meter body, but isolated from the effects of each other. No pressure and temperature correction are needed for accuracy performance comparison between the two rotors. Because of the two rotor averaging technique, the reliability of the volume totalization is greatly improved over earlier double-rotor and single-rotor designs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.