Measuring and testing – Volume or rate of flow – Mass flow by imparting angular or transverse momentum to the...
Patent
1995-03-10
1995-12-12
Noland, Thomas P.
Measuring and testing
Volume or rate of flow
Mass flow by imparting angular or transverse momentum to the...
7386137, 73 32A, G01F 184
Patent
active
054739497
ABSTRACT:
Several Radial Mode Coriolis mass flow rate meter geometries and electronic circuits are described that may be made to be sensitive to pressure or density changes. In one embodiment, the meter comprises: (1) a flow conduit for containing a fluid having a physical characteristic, the fluid adapted to flow in the conduit at an unknown rate, (2) a drive circuit for creating a vibration in the flow conduit, the fluid altering the vibration as a function of the physical characteristic and the flow rate, (3) a detector circuit for measuring the altered vibration at a working point and producing a signal representing an uncompensated mass flow rate of the fluid and (4) a computation circuit for calculating a compensated mass flow rate of the fluid proportional to the uncompensated rate by 1/.OMEGA.1.sup.n, where .OMEGA.1 is a driven natural frequency of the flow conduit and n is a number chosen as a function of the working point, the compensated rate thereby reduced of effects of the physical characteristic. A unique mathematical algorithm is also described that allows for a much wider variety of design geometry while maintaining insensitivity to pressure or density without having to measure or compensate for either. In addition, a method is described that allows for the accurate measurement and compensation of both pressure and density.
REFERENCES:
patent: Re31450 (1983-11-01), Smith
patent: 3444723 (1969-05-01), Wakefield
patent: 3485098 (1969-12-01), Sipin
patent: 3927565 (1975-12-01), Pavlin et al.
patent: 4009616 (1977-03-01), Wonn
patent: 4109524 (1978-08-01), Smith
patent: 4420983 (1983-12-01), Langdon
patent: 4422338 (1983-12-01), Smith
patent: 4491025 (1985-01-01), Smith et al.
patent: 4574639 (1986-03-01), Ward
patent: 4622858 (1986-11-01), Mizerak
patent: 4628744 (1986-12-01), Lew
patent: 4653332 (1987-03-01), Simonsen
patent: 4680974 (1987-07-01), Simonsen et al.
patent: 4691578 (1987-09-01), Herzl
patent: 4711132 (1987-12-01), Dahlin
patent: 4716771 (1988-01-01), Kane
patent: 4729243 (1988-03-01), Friedland et al.
patent: 4733569 (1988-03-01), Kelsey et al.
patent: 4756197 (1988-07-01), Herzl
patent: 4768384 (1988-09-01), Flecken et al.
patent: 4776220 (1988-10-01), Lew
patent: 4793191 (1988-12-01), Flecken et al.
patent: 4798091 (1989-01-01), Lew
patent: 4803867 (1989-02-01), Dahlin
patent: 4811606 (1989-03-01), Hasegawa et al.
patent: 4813289 (1989-03-01), Lew
patent: 4823613 (1989-04-01), Cage et al.
patent: 4823614 (1989-04-01), Lew
patent: 4829832 (1989-05-01), Lew
patent: 4831885 (1989-05-01), Dahlin
patent: 4852410 (1989-08-01), Corwon et al.
patent: 4856346 (1989-08-01), Kane
patent: 4869097 (1989-09-01), Tittmann et al.
patent: 4879910 (1989-11-01), Lew
patent: 4882935 (1989-11-01), Lew
patent: 4891991 (1990-01-01), Mattar et al.
patent: 4934195 (1990-06-01), Hussain
patent: 4949583 (1990-08-01), Lang et al.
patent: 5024104 (1991-06-01), Dames
patent: 5040415 (1991-08-01), Barkhoudarian
patent: 5044207 (1991-09-01), Atkinson et al.
patent: 5069075 (1991-12-01), Hansen et al.
patent: 5226330 (1993-07-01), Lew
patent: 5230254 (1993-07-01), Craft
patent: 5259250 (1993-11-01), Kotpak
patent: 5373745 (1994-12-01), Cage
Publication entitled "Direkte Massedurchflussmessung, Insbesonderemit Coriolisverfahren" by Von W. Steffen und Dr. W. Stumm; Part II; pp. 301-305; Published in "Messen Prufen Automatisieren" vol. 23 (1987) May, No. 5, pp. 301-305; Bad Worishofen, W. Germany.
Cage Donald R.
Schott Michael N.
Direct Measurement Corporation
Noland Thomas P.
Patel Harshad
LandOfFree
Coriolis mass flow rate meter having adjustable pressure and den 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 mass flow rate meter having adjustable pressure and den, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coriolis mass flow rate meter having adjustable pressure and den will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1353622