Flow sensor with flow-adaptable analog-digital-converter
US7490511B2 · kind B2 · utility
18Cited by
18References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2007 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Mar 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/699
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The flow sensor comprises a heater arranged between two sensing thermopiles. In addition, at least one monitoring thermocouple is provided for measuring the temperature of the heater. The signal from the monitoring thermocouple is used as a reference voltage for an A/D converter, which converts the signals from the sensing thermopiles. This allows to increase the resolution of the converter at higher flows, which results in more accurate measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.