Pressure measuring apparatus using vibratable wire
US4165651A · kind A · utility
19Cited by
3References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1977 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Sep 19, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L13/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A differential-pressure measuring instrument comprising a main body assembly with a pair of diaphragms each subject to a respective fluid pressure. The diaphragms enclose a sealed chamber containing a fill-liquid surrounding a non-magnetic vibratable wire which is tensioned in accordance with the applied differential pressure. A magnetic field passes transversely through the wire, and electrical current is supplied to the wire by electronic circuit means to produce a vibratory force on the wire as a result of interaction between the electrical current and the magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.