US 11,940,309 B2
Method for determining a fluid flow parameter within a vibrating tube
Daniel L. Gysling, South Glastonbury, CT (US)
Assigned to EXPRO METERS, INC., Wallingford, CT (US)
Filed by Expro Meters, Inc., Wallingford, CT (US)
Filed on May 17, 2021, as Appl. No. 17/322,377.
Claims priority of provisional application 63/025,668, filed on May 15, 2020.
Prior Publication US 2021/0356307 A1, Nov. 18, 2021
Int. Cl. G01F 1/84 (2006.01)
CPC G01F 1/8436 (2013.01) [G01F 1/8422 (2013.01); G01F 1/8427 (2013.01); G01F 1/8477 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A Coriolis meter, comprising:
a flow tube configured to contain a fluid flow there through;
a drive coil in communication with the flow tube and configured to drive the flow tube to vibrate at at least one resonant frequency of the flow tube;
at least one tube motion sensor configured to sense vibratory motion of the flow tube;
an array of strain-based sensors configured for sensing the flow tube, the array having at least one first strain-based sensor and at least one second strain based sensor, the array mounted on the flow tube with the at least one first strain-based sensor disposed at a first axial position and the at least one second strain based sensor disposed at a second axial position, the first axial position and the second axial position spaced apart from one another, the strain-based sensors configured to produce sensor signals representative of an amount of strain within the flow tube;
an electronic filtering module; and
a sensor array processing unit having a processor, the sensor array processing unit in communication with the array of sensors and a memory device storing executable instructions, wherein the instructions when executed cause the processor to control the array of strain-based sensors to produce the sensor signals representative of the amount of strain within the flow tube, the amount of strain including a first portion associated with the flow tube vibrating at at least one resonant frequency of the flow tube containing the fluid flow and a second portion associated with a fluid flow passing through the flow tube of the Coriolis meter;
wherein the electronic filtering module is in communication with the sensor array and is configured to filter the sensor signals to remove a first sensor signal portion representative of the strain first portion associated with the flow tube vibrating at the at least one resonant frequency of the flow tube containing the fluid flow, the flow tube vibrating at the at least one resonant frequency as a result of the flow tube being vibrationally driven by the drive coil.