Measuring and testing – Volume or rate of flow – Mass flow by imparting angular or transverse momentum to the...
Patent
1998-08-31
1999-10-19
Patel, Harshad
Measuring and testing
Volume or rate of flow
Mass flow by imparting angular or transverse momentum to the...
73861355, G01F 184
Patent
active
059692650
ABSTRACT:
A single tube Coriolis flowmeter of enhanced flow sensitivity in which material flow induces Coriolis deflections in a flow tube and Coriolis-like deflections in a balance bar vibrationally coupled to the flow tube. Both the Coriolis deflections and the Coriolis-like deflections have a phase shift determined by material flow and are used co-adjuvantly to derive material flow information. The flowmeter achieves a constant flow sensitivity over a range of changes in material density by 1) varying the flow sensitivity in a first direction under control of the ratio between the drive mode vibration amplitude of the flow tube and the balance bar and 2) varying the flow sensitivity in an opposite direction under control of the ratio between the Coriolis deflection amplitude of the flow tube and the Coriolis-like deflection of the balance bar. The drive mode vibration amplitude ratio varies with changes in drive mode frequency caused by changes in material density. The amplitude ratio of the Coriolis defection and the Coriolis-like deflection changes with changes in the magnitude of the separation of the drive mode frequency and the second bending mode frequency to the balance bar density which, in turn, is caused by changes in material density.
REFERENCES:
patent: 4823614 (1989-04-01), Dahlin
patent: 5044207 (1991-09-01), Atkinson et al.
patent: 5054326 (1991-10-01), Mattar
patent: 5398554 (1995-03-01), Ogawa et al.
patent: 5497665 (1996-03-01), Cage et al.
patent: 5531126 (1996-07-01), Drahm
patent: 5616868 (1997-04-01), Hagenmeyer et al.
patent: 5691485 (1997-11-01), Endo et al.
patent: 5796012 (1998-08-01), Gomi et al.
Lanham Gregory Treat
Stack Charles Paul
VanCleve Craig Brainerd
Micro Motion Inc.
Patel Harshad
LandOfFree
Coriolis flowmeter having its flow calibration factor independen does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coriolis flowmeter having its flow calibration factor independen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coriolis flowmeter having its flow calibration factor independen will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2058238