Title:
コリオリ式質量流量測定装置
Document Type and Number:
Japanese Patent JP2007529728
Kind Code:
A
Abstract:
The inventive in-line-measuring device comprises a vibratory-type measuring sensor provided with at least one measuring tube through which a measurable medium passes during the device operation. Said measuring tube is displaceable by means of an exciter arrangement at least temporarily and/or at least in a parallel direction according to lateral oscillations and at least temporarily and/or at least in a parallel direction according to torsion oscillations around the longitudinal imaginary axis of the measuring tube alternating with lateral oscillations or temporary superimposed therewith. In addition, the in-line-measuring device comprises a sensor arrangement for producing the measuring tube oscillations corresponding to representative oscillation measurements. An electronic unit of the measuring device, which controls the exciter arrangement, generates, by means of the oscillation measuring signal an/or an excitation current at least temporary at least one measuring value representing at least one measurable physical measuring quantity, par example mass flow rate-mass flow rate, a medium density or viscosity. Said electronic unit of the measuring device also makes it possible to determine a first intermediate value which corresponds to the lateral current fraction of the excitation current for maintaining the lateral oscillations of the measuring tube and a second intermediate value corresponding to the torsion current value of the excitation current for maintaining the torsion oscillations of the measuring tube and/or to a torsion oscillation damping of the measuring tube. A high-accuracy value is determined taking into account said two intermediate values and is valid event for two- or more-phased media.
Inventors:
Drum, Wolfgang
Fuchs, Michael
Leader, alfred
Hans-Jörg, Spriich
Itin, Ipho
Wies, Zamuel
Fuchs, Michael
Leader, alfred
Hans-Jörg, Spriich
Itin, Ipho
Wies, Zamuel
Application Number:
JP2007503343A
Publication Date:
October 25, 2007
Filing Date:
March 16, 2005
Export Citation:
Assignee:
Endress + Hauser Flowtec AG
International Classes:
G01F1/84; G01N9/00; G01N11/04; G01N11/08; G01N11/16
Domestic Patent References:
| JP2002532707A | 2002-10-02 | |||
| JP2002005809A | 2002-01-09 |
Foreign References:
| WO2003095950A1 | 2003-11-20 | |||
| WO2003076880A1 | 2003-09-18 |
Attorney, Agent or Firm:
Yoshiyuki Osuga