Method and apparatus for monitoring liquid flow
US4647919A · kind A · utility
9Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Oct 25, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/698
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid flow monitor. The device includes a thermistor placed in the path of liquid flow. A circuit including the thermistor in a Wheatstone bridge is used to sense the liquid flow by sensing the change in resistance of the thermistor. A transistor connected to the bridge is used to maintain the thermistor within predetermined levels to prevent overheating of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.