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Method for producing a magneto-inductive flowmeter with a partly reduced cross-section

A technology of magnetic induction, equipment, used in the field of manufacturing magnetic induction flow measurement equipment with a partially reduced cross-section, capable of solving complex and other problems, achieving the effect of facilitating the manufacturing process and small capital investment

Active Publication Date: 2017-05-31
ENDRESS HAUSER FLOWTEC AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this method there are also problems associated with the gasket, which can only be installed after forming the measuring tube
However, this is more complicated than fitting the gasket inside the measuring tube which still has a uniform cross-sectional area

Method used

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  • Method for producing a magneto-inductive flowmeter with a partly reduced cross-section
  • Method for producing a magneto-inductive flowmeter with a partly reduced cross-section
  • Method for producing a magneto-inductive flowmeter with a partly reduced cross-section

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Embodiment Construction

[0035] figure 1 A magnetic induction flow measuring device 1 for measuring the flow rate of a fluid 2 flowing through a measuring tube 3 is shown. The measuring tube 3 is provided on the inside in the area facing the fluid, ie over the entire length, with an electrically insulating gasket 4 . The measuring tube 3 is conveniently divided into an inlet section 3a, a measuring section 3b on which the sensor unit is placed, and an outflow section 3c. The sensor unit is shown as a pair of measuring electrodes 8 for sensing the induced voltage and a magnet system 9, 9' at figure 1 is represented by two boxes. The magnet system 9, 9' comprises at least two coils 9, 9' for generating a magnetic field 10 and, in given cases, also pole pieces and / or magnetic field guiding metal sheets for implementing an advantageous spatial distribution of the magnetic field . The connection axes of the pair of measuring electrodes 8 and the magnetic field coils 9, 9' run perpendicular to one anoth...

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PUM

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Abstract

The invention relates to a method for producing a device (1) for measuring the flow of a fluid flowing through a measuring tube (3) made of metal using the magnetic-inductive principle, having the following method steps: - a first and a second collar (11, 11') made of metal are secured to the measuring tube (3) from the exterior region so as to be aligned perpendicularly to the tube axis of the measuring tube (3), - the interior region of the measuring tube (3) is lined with an electrically nonconductive elastic liner (4), - a measuring section (3b) of the measuring tube (3), said section being located at least partly between the first (11) and the second collar (11'), is changed by means of a cold-working process such that the cross-sectional area of the measuring section (3b) is reduced compared to the cross-sectional area of a measuring tube (3) inflow section (3a) located upstream of the measuring section and a measuring tube (3) outflow section (3c) which adjoins the measuring section (3b).

Description

technical field [0001] The invention relates to a method of manufacturing a device for measuring the flow of a fluid through a measuring tube using the magnetic induction measuring principle. Background technique [0002] Magnetic inductive flow measurement devices are widely used in process and automation technology for a variety of fluids with a conductivity of at least eg 5 uS / cm. Corresponding flow measuring devices for different fields of application are sold by the applicant, eg under the trademark PROMAG, in the most varied embodiments. [0003] The measuring principle is based on Faraday's law of magnetic induction, known from various publications. By means of a magnet system fixed in the measuring section, a constant magnetic field is generated substantially perpendicular to the direction of flow of the conductive fluid. In this way, ions present in the flowing fluid are deflected in opposite directions. The voltage generated by this charge separation is detected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/58G01F15/14
CPCG01F1/588G01F15/14G01F1/58G01F15/18
Inventor 弗洛伦特·恰布瑟尔拉尔斯·德雷埃尔托马斯·祖尔策
Owner ENDRESS HAUSER FLOWTEC AG