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Type identification for drive control of coriolis flowmeter

A flowmeter and type of technology, applied in the direction of direct mass flowmeter, mass flow measurement device, measurement flow/mass flow, etc., can solve the problem of inability to generate driving signal of straight tube flowmeter

Inactive Publication Date: 2004-12-08
MICRO MOTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, conventional transmitters cannot be used to generate the drive signal used by straight tube flowmeters

Method used

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  • Type identification for drive control of coriolis flowmeter
  • Type identification for drive control of coriolis flowmeter
  • Type identification for drive control of coriolis flowmeter

Examples

Experimental program
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Embodiment Construction

[0037] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which some embodiments of the invention are shown. It should be appreciated by those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; The scope is adequately communicated to those skilled in the art. Like numbers refer to like elements throughout the drawings.

[0038] Coriolis Flow Meter Overview - Figure 1

[0039]FIG. 1 shows a Coriolis flow meter 5 comprising a Coriolis flow meter assembly 10 and a transmitter 20 . Transmitter 20 is connected to flow meter assembly 10 via wire 100 to provide density, mass flow rate, volume flow rate, total mass flow rate and other information through channel 26 . A Coriolis flow meter 5 is described here, but it will be apparent to those skilled in the art that the invention may be practiced in conjunction wit...

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PUM

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Abstract

Coriolis flowmeters generally consist of two different types, with two different configurations. This invention applies (401) initial drive signals to a drive circuit which causes a flow tube to vibrate. The configuration of the flow tube is then determined (404) from received from pick off sensors associated with the flow tube. Parameters for generation of said drive signals are then set (405) based upon the configuration of the flow tube.

Description

technical field [0001] The invention relates to electronic components for controlling drive signals in a device that measures properties of a substance flowing through at least one vibrating conduit in the device. More specifically, the present invention relates to a system for determining parameters used to generate a drive signal based on the frequency of vibration of a vibrating catheter. Background technique [0002] It is well known to use a Coriolis effect mass flow meter to measure the mass flow rate and other information of a material flowing through a conduit in the flow meter. Example Coriolis flow meters are disclosed in U.S. Patents 4,109,524, August 29, 1978, 4,491,025, January 1, 1985, and 31450, reissued February 11, 1982, all to J.E. Smith et al. . These flowmeters have one or more conduits of straight or curved configuration. Each conduit structure in a Coriolis mass flow meter has a set of natural modes of vibration, which can be purely bending, torsiona...

Claims

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Application Information

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IPC IPC(8): G01F1/84
CPCG01F1/8418G01F1/849G01F1/8413G01F1/8436G01F1/8477G01F1/84
Inventor R·L·马金尼斯B·T·史密斯
Owner MICRO MOTION INC