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Meter electronics and methods for verification diagnostics for a flow meter

A technology of electronic devices and flowmeters, applied in the direction of direct mass flowmeters, instruments, volume measurement, etc., can solve problems such as changing the accuracy of flow measurement

Active Publication Date: 2010-11-03
MICRO MOTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

changes thus affect the accuracy of the flow measurement produced by the flowmeter

Method used

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  • Meter electronics and methods for verification diagnostics for a flow meter
  • Meter electronics and methods for verification diagnostics for a flow meter
  • Meter electronics and methods for verification diagnostics for a flow meter

Examples

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Embodiment Construction

[0072] Figure 1-12 The following description and description describe specific examples to teach those skilled in the art how to make and use the best mode of the invention. In order to teach the principles of the invention, some conventional aspects have been simplified and omitted. Variations from these examples may be appreciated by those skilled in the art that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways in order to form multiple variations of the invention. As a result, the invention is not limited to the specific examples described below, but only by the claims and their equivalents.

[0073] figure 1 A Coriolis flow meter 5 including a meter assembly 10 and meter electronics 20 is shown. Meter assembly 10 responds to the mass flow and density of process material. Via leads 100, meter electronics 20 is connected to meter assembly 10 to provide density, mass flow a...

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Abstract

Meter electronics (20) for a flow meter (5) is provided according to an embodiment of the invention. The meter electronics (20) includes an interface (201) for receiving a vibrational response from the flow meter (5) and a processing system (203) in communication with the interface (201). The vibrational response is a response to a vibration of the flow meter (5) at a substantially resonant frequency. The processing system (203) is configured to receive the vibrational response from the interface (201), determine a frequency (omiga) of the vibrational response, determine a response voltage (V) and a drive current (I) of the vibrational response, measure a decay characteristic (epsilon) of the flow meter (5), and determine the stiffness parameter (K) from the frequency (omiga), the response voltage (V), the drive current (I), and the decay characteristic (epsilon).

Description

technical field [0001] The present invention relates to a meter electronics device and method for calibration diagnosis of a flow meter. Background technique [0002] statement of problem [0003] Vibrating pipe sensors, such as Coriolis mass flow meters or vibrating tube densitometers, generally work by detecting the motion of a vibrating pipe containing flowing material. Properties related to the material in the pipeline, such as mass flow, density, etc., can be determined by processing the measurement signals received from motion transducers associated with the pipeline. The stiffness and damping properties generally affect the modes of vibration of a vibrating material filled system through the combined mass of the containing pipe and the material contained therein. [0004] The piping of a vibratory flow meter may include one or more flow tubes. The flow tube is forced to vibrate at a resonant frequency, which in this case is proportional to the density of the fluid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/84G01F25/00G01N9/00
CPCG01F1/8436G01F1/8431G01N9/002G01F25/0007G01F15/024G01F1/8413G01F1/8477G01F25/10G01F1/84G01F25/00G01N9/00
Inventor M·J·伦兴A·T·佩藤T·J·坎宁安M·J·贝尔
Owner MICRO MOTION INC