Thermal, flow measuring device
US8583385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2010 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Sep 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/6842
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Thermal, flow measuring device and method for operating a thermal, flow measuring device. The thermal, flow measuring device has a first sensor with a first heatable resistance thermometer and at least an additional, second sensor with a second heatable resistance thermometer; wherein a decision coefficient is calculated according to the formula DC=(PC1−PC2)/PC1, with PC1(t=t1)=P1,1(t1)/(T1,heated;actual(t=t1)−Tmedium;actual(t=t1)) and PC2(t=t2)=P2,2(t2)/(T2,heated;actual(t=t2)−Tmedium;actual(t=t2)), with P being the heating powers consumed by the corresponding resistance thermometers at the points in time t, and T being the temperature values; wherein the value of the decision coefficient indicates the flow direction of a measured medium in the measuring tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.