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Coriolis mass flow sensor

A mass flow and Coriolis technology, applied in the field of mass flow measurement and control, can solve the problems of impossible detection hardware installation, unsatisfactory and difficult detection tube vibration

Active Publication Date: 2008-12-10
EMERSON ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it difficult or impossible to mount detection hardware on the tube itself
Existing solutions for detecting tube vibrations are far from satisfactory

Method used

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  • Coriolis mass flow sensor
  • Coriolis mass flow sensor
  • Coriolis mass flow sensor

Examples

Experimental program
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Embodiment Construction

[0027] Illustrative embodiments of the present invention are described below. In the interest of clarity, not all features of an actual implementation are described in this specification. It should of course be appreciated that in the development of any practical embodiment, each particular implementation must be made to achieve the developer's specific goals, such as accommodating relevant system and relevant business constraints, which will vary from implementation to implementation. Also, it should be understood that such developmental work might be complex and time consuming, but would nevertheless be no more than a routine procedure for those of ordinary skill in the art having the benefit of this specification.

[0028] Figure 1 illustrates a Coriolis mass flow sensor and controller according to an embodiment of the present invention. It basically consists of two independent operating systems: Coriolis sensor pickup and drive system A and application and control system ...

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Abstract

A Coriolis mass flow sensor includes a flow tube, a light source, and a light pipe having a light inlet configured to receive light from the light source and a light outlet configured to emit light received from the light source. Light. The light detector receives light from the light outlet of the light pipe, and the drive means vibrates the flow tube so that the flow tube passes through the light path between the light outlet of the light guide and the light detector. In some embodiments, the light guide defines a substantially square cross-section. A detection hole having a predetermined shape is disposed between the light outlet of the light guide and the light detector. The detection hole allows a portion of the light emitted from the light outlet of the light to pass to the photodetector so that the light entering the photodetector has the predetermined shape.

Description

[0001] Cross References to Related Applications [0002] This application is a formal application of US Provisional Patent Application Nos. 60 / 481852 and 60 / 521223 (filed January 2, 2004 and March 15, 2004, respectively), which are incorporated herein by reference. technical field [0003] The present invention generally relates to mass flow measurement and control, and in particular to a mass flow measurement and control device based on Coriolis force effect. Background technique [0004] Mass flow measurement based on the Coriolis force effect is achieved as follows. The Coriolis force results in the effect that a mass moves in a given direction and is then forced to change direction in which it has a vector component perpendicular to the given direction of flow. This can be expressed by the following equation: [0005] f C =2M×ω [0006] Among them, F C (Coriolis force vector) is the cross product of M (the momentum vector of the flowing mass) and ω (the angular velo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/84
Inventor T·伯格J·迪尔J·伯德萨尔T·布朗
Owner EMERSON ELECTRIC CO