Coriolis-type mass flow sensor with flow condition compensating
US5531126A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Jul 19, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N9/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This mass flow sensor is to be fitted with two straight tubes, but conventionally needed manifolds are to be dispensed with. The sensor can be installed, by flanges, in a conduit of a given diameter so as to be axially aligned with the conduit, through which flows a fluid to be measured. It has a straight measuring tube, which extends between the flanges and is traversed by the fluid, and a straight dummy tube, which extends parallel to the measuring tube and is not traversed by the fluid. Also provided are a nodal plate on the inlet side and a nodal plate on the outlet side, one of which fixes the inlet-side end portion of the measuring tube to the corresponding end portion of the dummy tube, and the other of which fixes the outlet-side end portion of the measuring tube to the corresponding end portion of the dummy tube, such that the measuring tube and the dummy tube are arranged side by side. A support tube has its ends fixed to the respective flanges. A circuit for exciting resonance vibrations of the measuring tube acts only on the dummy tube. The measuring tube and dummy tube may also be coaxial with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.