Unlock instant, AI-driven research and patent intelligence for your innovation.

A method and apparatus for measuring flow through a conduit by measuring Coriolis coupling between two vibration modes

一种振动模式、振动管道的技术，应用在流量计领域，能够解决流量误差等问题

Active Publication Date: 2007-11-07
MICRO MOTION INC
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Over time, changes in zero offset can cause significant errors in measured flow

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method and apparatus for measuring flow through a conduit by measuring Coriolis coupling between two vibration modes
  • A method and apparatus for measuring flow through a conduit by measuring Coriolis coupling between two vibration modes
  • A method and apparatus for measuring flow through a conduit by measuring Coriolis coupling between two vibration modes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0104] 1-7 and the following description describe specific examples to teach those skilled in the art how to make and use the best mode of the invention. For the purpose of teaching inventive principles, some traditional aspects have been simplified or omitted. 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 recognize that the features described below can be combined in various ways to form variations of the 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.

[0105] Theoretical Background of the Simple Two-Model Model

[0106] Assuming that the structure of the flowmeter is linear and time-invariant, it can be described by a set of second-order linear differential equations (1). In this case, x is a vector representing the motion of the structure at different locations on the struct...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method of searching a plurality of semi-structured and / or unstructured documents comprising the steps of: providing a search interface having a search term input window, a search initiation button and a plurality search result display window, the search interface further including one or more search term clarification buttons; providing a plurality of documents having one or more search identifier terms associated therewith; inputting a search term into the search term input window and initiating a search; searching for documents related the search term, and displaying documents identified by the search in the search result display windows, wherein each search result display window displays search results related to a particular identifier term, and wherein further the search identifier term assigned to each search result display window is dependent upon the results of prior searches.

Description

technical field [0001] The present invention relates to the field of flow meters, and in particular, to Coriolis flow meters. Background technique [0002] In a Coriolis flowmeter, a fluid transfer pipe (or pipes) is vibrated by vibrating it in a sinusoidal motion and the difference between the vibrational responses at two or more locations on the pipe (or The time delay (or phase angle) to measure the flow rate. However, for real cases where the time delay varies linearly with the flow rate, the time delay is usually not zero at zero flow. There is often a zero flow delay or offset caused by factors such as non-proportional attenuation in the meter electronics, residual flex response, electromagnetic crosstalk, or phase delay. [0003] The zero flow offset is typically corrected by measuring the zero flow offset under zero flow conditions and subtracting the measured offset from subsequent measurements made during flow. If this zero flow offset remains constant, then thi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/84
CPCG01F1/8436G01F1/849
Inventor S·J·舍利T·D·夏普
Owner MICRO MOTION INC