Fluid flowmeter
US4041757A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1975 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Dec 30, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/6847
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for measuring the flow of fluid through a main supply line having a restrictive element therein to develop a pressure drop. A shunt fluid flow path bypasses this element. The shunt path includes a conduit having a first electrically heated portion and an unheated portion, each portion respectively having a temperature sensing device associated therewith. Means are provided for varying the voltage supplied to an electrical heater for the first conduit portion to maintain a constant temperature difference between the temperature sensing devices, the amount of voltage supplied being a function of the characteristics of fluid flow through the main supply line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.