公开(公告)号：US20190003875A1

公开(公告)日：2019-01-03

申请号：US16061812

申请日：2016-11-15

Applicant: Endress + Hauser Flowtec AG

Inventor： Stephan Natter ,  Ton Leenhoven ,  Paul Ceglia ,  Martin Josef Anklin

IPC: G01F25/00 ,  G01F1/84 ,  G01F15/02

Abstract: A method for ascertaining a Reynolds number compensated flow velocity and/or a Reynolds number compensated flow (G) by a Coriolis flow measuring device, comprising steps as follows: a. ascertaining at least one meter factor (C) during a calibration time interval in a calibration plant (a) based on measured values (A and B) of the Coriolis flow measuring device and a piston test apparatus of the calibration plant (a) by an evaluation unit of the calibration plant (a); b. transmitting the meter factor (C) from the evaluation unit of the calibration plant (a) to an evaluation unit of the Coriolis-flow measuring device; c. associating a Reynolds number (H) with this meter factor (D) while the Coriolis flow measuring device is connected to the calibration plant (a), and storing at least one data set of at least one number pair (D), in each case, of a Reynolds number and a meter factor, in the Coriolis flow measuring device; d. ascertaining an uncorrected measured value (E) for a flow velocity and/or a flow of a measured medium (M) at a measuring point (b), the density of the measured medium (M) at the measuring point (b) and the viscosity of the measured medium at the measuring point (b); e. ascertaining a Reynolds number based on the measured value (E) of the flow velocity and/or flow, the density and the viscosity of the measured medium (M) determined in step d) and associating a meter factor (C) with this Reynolds number; and f. correcting the uncorrected measured value (E) of flow velocity and/or flow based on the associated meter factor (C) and outputting the Reynolds number-corrected flow velocity and/or the Reynolds number-corrected flow (G), and a Coriolis flow measuring device.

公开(公告)号：US20150377691A1

公开(公告)日：2015-12-31

申请号：US14432221

申请日：2013-09-19

Applicant: ENDRESS+HAUSER FLOWTEC AG

Inventor： Paul Ceglia ,  Achim Wiest ,  Oliver Brumberg

IPC: G01F25/00

CPC classification number: G01F25/0053 ,  G01F1/66 ,  G01F1/692 ,  G01F1/7082 ,  G01F7/00

Abstract: A flow measuring device for ascertaining a corrected measured value of a flow velocity and/or a corrected mass flow of a medium, especially a gas, in a measuring tube, including: an apparatus for ascertaining a first measured value of flow velocity and/or mass flow of the medium by thermal, mass flow measurement; an apparatus for ascertaining velocity of sound and/or frequency dependent damping of an acoustic signal, especially an ultrasonic signal, in the medium and/or an apparatus for ascertaining an optical, wavelength dependent absorption of an optical and/or excited fluorescence of the medium, and an evaluation unit for correcting the ascertained first measured value of mass flow or flow velocity based on the ascertained sound velocity values and/or the frequency dependent, ascertained damping values of the acoustic signal and/or the ascertained absorption values of the optical signal and/or the florescence values of the medium, and method for ascertaining a corrected measured value of flow velocity and/or mass flow, and use of the device and method.

Abstract translation: 一种用于确定测量管中的介质，特别是气体的流速和/或校正质量流的校正测量值的流量测量装置，包括：用于确定流速的第一测量值和/或 通过热质量流量测量介质的质量流量; 用于确定介质中的声信号，特别是超声波信号的声速和/或频率相关阻尼的装置和/或用于确定介质的光学和/或激发荧光的光学，波长依赖性吸收的装置 以及评估单元，用于基于所确定的声速值和/或频率依赖确定的声信号的阻尼值和/或所确定的光信号吸收值来校正所确定的质量流量或流速的第一测量值 和/或介质的荧光值，以及用于确定校正的流速和/或质量流量的测量值的方法以及该装置和方法的使用。

公开(公告)号：US10281316B2

公开(公告)日：2019-05-07

申请号：US14432221

申请日：2013-09-19

Applicant: Endress + Hauser Flowtec AG

Inventor： Paul Ceglia ,  Achim Wiest ,  Oliver Brumberg

IPC: G01F25/00 ,  G01F1/66 ,  G01F1/692 ,  G01F1/708 ,  G01F7/00

Abstract: A flow measuring device for ascertaining a corrected measured value of a flow velocity and/or a corrected mass flow of a medium, especially a gas, in a measuring tube, including: an apparatus for ascertaining a first measured value of flow velocity and/or mass flow of the medium by thermal, mass flow measurement; an apparatus for ascertaining velocity of sound and/or frequency dependent damping of an acoustic signal, especially an ultrasonic signal, in the medium and/or an apparatus for ascertaining an optical, wavelength dependent absorption of an optical and/or excited fluorescence of the medium, and an evaluation unit for correcting the ascertained first measured value of mass flow or flow velocity based on the ascertained sound velocity values and/or the frequency dependent, ascertained damping values of the acoustic signal and/or the ascertained absorption values of the optical signal and/or the florescence values of the medium, and method for ascertaining a corrected measured value of flow velocity and/or mass flow, and use of the device and method.