Flow measuring device and flow measuring method
US6094982A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | May 23, 1997 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | May 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/698
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A first heating resistor is placed in a fluid flow path. A second heating resistor is placed downstream of the first heating resistor. A power supply unit supplies power to each of the first and second heating resistors. A measuring unit measures directly or indirectly a heating factor value of each of the first and second heating resistors. A subtracting unit subtracts the heating factor value of the first heating resistor from the heating factor value of the second heating resistor. A calculating unit performs one of multiplication and division on the subtracting result and the heating factor value of one of the first and second heating resistors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.