Fluid-measuring device and fluid-measuring method
US7467547B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2006 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | May 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid-measuring device intermittently drives a heater during a measurement period and receives outputs of the lateral side temperature sensors as lateral side temperature signals upon non-driving whenever the heater stops heating during a measuring period. Then, the fluid-measuring device receives outputs of the lateral side temperature sensors in response to the heating of the heater 4 as lateral side temperature signals upon driving corresponding to the lateral side temperature signals upon non-driving. The fluid-measuring device also receives upstream and downstream side temperature signals outputted from upstream and downstream side temperature sensors corresponding to the lateral side temperature signals upon driving. The fluid-measuring device detects physical properties data of the fluid on the basis of the lateral side temperature signal upon non-driving and the lateral side temperature signal upon driving. The fluid-measuring device corrects the upstream and downstream side temperature signals on the basis of the physical properties data. The fluid-measuring device detects a temperature profile varied owing to the velocity of the fluid on the basis of the corrected upstr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.