Measuring and testing – Volume or rate of flow – Mass flow by imparting angular or transverse momentum to the...
Patent
1996-04-22
1998-10-27
Dombroske, George M.
Measuring and testing
Volume or rate of flow
Mass flow by imparting angular or transverse momentum to the...
73861356, G01F 184
Patent
active
058279792
ABSTRACT:
In the field of Coriolis mass flow meters, determination of the true zero of the meter has always been problematic due to zero drift effects with changing boundary conditions and fluid parameters. Disclosed are apparatus and methods for determining the true mass flow related component of the signal of the meter separately from errors caused by changing boundary conditions and fluid parameters. Accordingly, an apparatus for measuring a mass flow rate of a fluid flowing relative to a flow conduit includes: (1) a force driver for vibrating the flow conduit, (2) a sensor for measuring a resulting motion of the flow conduit and producing a sensed motion signal indicative thereof, the resulting motion containing a Coriolis mode component and a boundary condition mode component, (3) signal processing circuitry, coupled to the sensor to receive the sensed motion signal therefrom, for determining a magnitude of the Coriolis mode component of the resulting motion and (4) output circuitry for producing an output signal proportional to the mass flow rate, the output signal substantially free of influence from the boundary condition mode component of the sensed motion signal.
REFERENCES:
patent: Re31450 (1983-11-01), Smith
patent: 3444723 (1969-05-01), Wakefield
patent: 3485098 (1969-12-01), Sipin
patent: 3874221 (1975-04-01), Lockie
patent: 3927565 (1975-12-01), Pavlin et al.
patent: 4009616 (1977-03-01), Wonn
patent: 4109524 (1978-08-01), Smith
patent: 4217774 (1980-08-01), Agar
patent: 4420983 (1983-12-01), Langdon
patent: 4422338 (1983-12-01), Smith
patent: 4490009 (1984-12-01), Nakai et al.
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: 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: 4934196 (1990-06-01), Romano
patent: 4949583 (1990-08-01), Lang et al.
patent: 4955239 (1990-09-01), Cage et al.
patent: 5024104 (1991-06-01), Dames
patent: 5027662 (1991-07-01), Titlow et al.
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: 5373745 (1994-12-01), Cage
patent: 5381697 (1995-01-01), Van Der Pol
patent: 5473949 (1995-12-01), Cage et al.
patent: 5497665 (1996-03-01), Cage et al.
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.
Carmichael Larry K.
Hahn David T.
Schott Michael N.
Direct Measurement Corporation
Dombroske George M.
Patel Harshad
LandOfFree
Signal processing apparati and methods for attenuating shifts in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal processing apparati and methods for attenuating shifts in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal processing apparati and methods for attenuating shifts in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1614693