Thermal flow meter
US8040493B2 · kind B2 · utility
12Cited by
190References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2009 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Oct 7, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/36222
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A thermal flow meter for use in dialysis is described, that uses a thermal wave to generate a signal in the fluid for which the flow rate is to be measured. The phase angle of the thermal wave signal changes when traversing downstream. The phase difference between the signals received downstream, compared with a reference excitation source signal is measured, and used to determine the flow rate of the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.