Electrode and leading-out device of miniaturized electromagnetic flow sensor

Abstract

The invention discloses an electrode and a leading-out device of a miniaturized electromagnetic flow sensor. Comprising a measuring cavity, a first electrode, a second electrode and a U-shaped magnetic conductive plate, a first conductive electrode and a second conductive electrode are respectively arranged on two sides of the through hole of the measuring cavity, are in contact with the fluid medium in the measuring cavity and are used for measuring the induced potential generated by the fluid medium; a U-shaped magnetic conductive plate comprising an electrode lead-out hole is arranged above the measuring cavity, and the first electrode and the second electrode upwards penetrate through the U-shaped magnetic conductive plate through the electrode lead-out hole; the U-shaped magnetic conductive plate is made of a magnetic conductive material, so that the U-shaped magnetic conductive plate and the magnetic conductive material on the periphery of the measuring cavity form a magnetic circuit, and a distribution magnetic field required by the measuring cavity is provided. The magnetic conductive plate is arranged at the electrode leading-out part, differential interference is reduced, and the signal sensitivity of the electrode is improved.

Description

technical field [0001] The electrode and lead-out device of a miniaturized electromagnetic flow sensor described in the present invention relate to the technical fields of miniaturized electromagnetic flow sensor, accurate flow measurement, water metering, heat metering, etc., in particular to the central heating system and water system air conditioner. Precise measurement, heat metering, flow and heat balance, as well as urban water supply and drainage, agricultural irrigation, flow measurement in production processes, etc. The invention is suitable for products such as a balance heat meter, a heat metering device with a built-in control valve, a heat supply measurement and control terminal integrating a flow sensor and a control valve, a miniaturized electromagnetic flowmeter, and a water meter. Background technique [0002] Electromagnetic flowmeter is a flow measuring instrument based on Faraday's electromagnetic induction principle. It is proportional to the flow rate ...

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Problems solved by technology

[0010] The purpose of the present invention is to provide a miniaturized electromagnetic flow sensor electrode and lead-out device, to solve the problems of differential interference and large magnetic gap affecting signal sensitivity in the prior art without a magnetic field isolation device, especially to solve the problems of balanced heat meters, Technical issues such as high-precision flow measurement of heating measurement and control terminal equipment

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