Electromagnetic flow meter

An electromagnetic flowmeter and flow rate technology, which is applied in the direction of detecting fluid flow, volume/mass flow generated by electromagnetic effects, testing/calibrating volume flow, etc., can solve problems such as unqualified electromagnetic flowmeters and achieve protection circuits. Effect
CN106568485AInactive Publication Date: 2017-04-19TECHCROSS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TECHCROSS
Publication Date
2017-04-19
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

Provided is an electromagnetic flowmeter. The electromagnetic flowmeter includes: a coil configured to form a magnetic field as power is applied; an electrode configured to measure an electromotive force generated according to a flow rate passing through the magnetic field; an amplifying circuit unit configured to amplify the electromotive force measured at the electrode; and a relay unit which is provided between the electrode and the amplifying circuit unit and which is turned on or off. Therefore, the flow meter can be protected in the noise generated in the outside.
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Description

technical field

[0001] The present invention relates to an electromagnetic flowmeter, and more particularly, to an electromagnetic flowmeter capable of coping with external high-voltage shocks caused by lightning, welding, or the like. Background technique

[0002] Electromagnetic flowmeter refers to a flowmeter that uses electromagnetic induction, and applies power to the coil to form a magnetic field perpendicular to the non-magnetic tube, and measures the flow by the following principle: If a conductive fluid flows in the tube, it is induced by electromagnetic induction between the two. The right-angled electrodes generate an electromotive force proportional to the flow rate.

[0003] figure 1 The configuration of a general electromagnetic flowmeter is shown.

[0004] Referring to the above drawings, the electromagnetic flowmeter 10 is installed on one side of the pipe 11 where the fluid flows, and includes a plurality of electrodes 12 arranged on the pipe 11 and a coil...

Claims

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