Coriolis flowmeter with natural frequency adjusting means engaged with the counterbalancing conduit
US5398554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Nov 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/849
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Coriolis flowmeter of double conduit type having inner and outer conduits, is capable of effectively detecting with increased stability a Coriolis force acting on the inner fluid passage without being effected by external vibration, e.g., of piping, piping stress and a change of ambient temperature and the like. A cylindrical housing 33, connected with flanges 31 and 32 to flow piping, has a thick-walled cylindrical body 33a and end portions 33b each having a center bore 32c communicating with a cavity formed in the housing 33. The housing 33 accommodates an inner conduit 35 and an outer conduit 34 mounted coaxially with each other and secured each at both ends to the opposite end portions 33b. A vibrator 36 and sensors 37 and 38 are mounted between the inner conduit 35 and the outer conduit 34 that is equipped with an adjusting balancer 39 to obtain a resonant frequency of the same natural vibrations of the two conduits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.