Directional low differential pressure transducer
US4787251A · kind A · utility
49Cited by
15References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jul 15, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L11/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure differential measuring apparatus (25) wherein the direction of fluid flow (5) is determined by calculating the ratio between pressures of two discrete fluid masses (3, 4). The device includes two tandem thermal sensors (7, 6), the upstream sensor creating a thermal wake which is carried past the downstream sensor, thereby slowing the downstream sensor's nominal cooling rate. A venturi (8) is utilized to create desired flow characteristics in the region of the sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.