Flow detector device with self check
US7644613B2 · kind B2 · utility
7Cited by
15References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2008 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Jul 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/6965
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal flow sensor is equipped with a self-test unit that monitors the device and generates a fault signal in the presence of a malfunction. The self-test unit can e.g. monitor the integrity of a membrane carrying the heater and temperature sensors, or it can monitor various operational parameters of the device, thereby increasing the safety of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.