Method and apparatus for current measurement for electronically-controlled pump
US6801031B1 · kind B1 · utility
3Cited by
15References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 1999 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Sep 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/343
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The current draw of a pump driven by an electric motor, especially a centrifugal pump such as a heating-system circulating pump, is measured by detecting the voltage drop across a conductor segment connecting the power side and hence the power line to the motor control circuit. This eliminates the need for a separate measurement resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.