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Methods and meter electronics for rapidly detecting a non-uniformity of a material flowing through a coriolis flowmeter

An electronic device and flowmeter technology, which is applied in the direction of measuring device, mass flow measuring device, direct mass flowmeter, etc., can solve the problem of wrong mass flow rate of flowmeter

Active Publication Date: 2008-05-21
MICRO MOTION INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Foreign matter can also cause erroneous mass flow in the flowmeter

Method used

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  • Methods and meter electronics for rapidly detecting a non-uniformity of a material flowing through a coriolis flowmeter
  • Methods and meter electronics for rapidly detecting a non-uniformity of a material flowing through a coriolis flowmeter
  • Methods and meter electronics for rapidly detecting a non-uniformity of a material flowing through a coriolis flowmeter

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Embodiment Construction

[0067] 1-20 and the following description illustrate specific examples to teach those skilled in the art how to make and use the best mode of the invention. Certain traditional aspects are simplified or omitted in order to teach the principles of creativity. Those skilled in the art will recognize variations from these examples that fall within the scope of the invention. Those skilled in the art will understand that the features described below can be combined in various ways to form various changes of the present invention. As a result, the invention is not to be limited by the specific examples described below, but only by the claims and their equivalents.

[0068] FIG. 1 shows a Coriolis flow meter 5 including a meter assembly 10 and meter electronics 20 . The meter assembly 10 responds to the mass flow and density of the process material. Meter electronics 20 is connected to meter assembly 10 by wire 100 to provide density, mass flow and temperature information, as wel...

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Abstract

Meter electronics (20) and methods for detecting a flow anomaly in a flow material flowing through a flow meter (5) are provided. The meter electronics (20) includes an interface (201) for receiving a vibrational response of the flow material, with the vibrational response including at least a first sensor signal and a second sensor signal, and a processing system (203) in communication with the interface (201). The processing system (203) is configured to receive the vibrational response from the interface (201), generate a ninety degree phase shift from the first sensor signal and generate at least one flow characteristic using at least the first sensor signal and the ninety degree phase shift, compare the at least one flow characteristic to at least one anomaly profile, detect a shift in the vibrational response if the at least one flow characteristic falls within the anomaly profile, and indicate an anomaly condition as a result of the detecting.

Description

technical field [0001] The present invention relates to meter electronics and methods for detecting flow foreign objects in a flow material flowing through a flow meter. Background technique [0002] It is known to use a Coriolis mass flow meter to measure the mass flow rate and other information of the material flowing through the pipeline, such as US Patent No. 4491025 issued to J.E. Smith et al. on January 1, 1985 and on February 11, 1982 Disclosed in Re. 31450 issued to J.E.Smith. These flow meters have one or more flow tubes in various configurations. Each catheter configuration can be viewed as having a set of natural modes of vibration including, for example, purely bending, torsional, radial, and coupled modes. In a typical Coriolis mass flow measurement application, a conduit configuration is excited in one or more modes of vibration as material flows through the conduit, and the motion of the conduit is measured at points spaced along the conduit. [0003] The v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/84G01N9/00
CPCG01F15/024G01F15/00G01F1/74G01F1/8477G01F1/8436G01F1/8413G01N9/002G01F1/84G01N9/00
Inventor G·R·杜菲尔M·J·贝尔C·B·麦卡纳利R·L·马金尼斯
Owner MICRO MOTION INC
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