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FLDC800 series plug-in electromagnetic flowmeter


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CKAS-FLDC800系列插电式电磁流量计是一种基于管道电磁流量计开发的新型流体流量计。针对管道电磁流量计在大型管道上安装困难且成本高昂的缺陷，采用了加压开闸和加压安装技术。插拔式电磁流量计可以安装在不停水的情况下，也可以安装在铸铁管、水泥管和PE管上，为流体流量检测提供了一种新的方法。

degree of protection:
IP68

Product Description

Features

Measuring principle

Technical Parameters

Plug-in electromagnetic flowmeter structure and dimensions and installation requirements

Product Description

CKAS-FLDC800 series plug-in electromagnetic flowmeter is a new type of fluid flowmeter developed on the basis of pipeline electromagnetic flowmeter.Aiming at the defects of difficult and expensive installation of pipeline electromagnetic flowmeters on large pipelines, the technology of opening under pressure and installation under pressure is adopted. Plug-in electromagnetic flowmeters can be installed without stopping (water), or in Installed on cast iron pipes, cement pipes, and PE pipes, it provides a new method for fluid flow detection.

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Features

Plug-in electromagnetic flowmeters have absolute advantages in installation and price in the detection of flow in large pipelines.

The converter adopts optimized design, compact structure, easy electrical installation, converter and sensor are interchangeable, and the measurement range (0.5m/s~10m/s) can be changed freely.

The converter and sensor have two protection levels and installation methods, and there is an IP68 level suitable for submersible installations.

It is suitable for flow detection of water, sewage, acid, strong alkali and other liquids with conductivity above 5us/cm, especially suitable for flow measurement of water supply and drainage pipelines.

Wide versatility and strong interchangeability, the flow measurement is only related to the insertion depth, so one model can be applied to the fluid measurement requirements of various specifications of pipelines.

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Measuring principle

Fundamental

Electromagnetic flowmeters are designed to measure electrolyte fluids, and the measurement principle is based on Faraday's law of electromagnetic induction.According to this law, when any conductor moves through a magnetic field to cut the magnetic force line, an induced electromotive force will be generated:

Fundamental

For the insertion type electromagnetic flowmeter, the conductive liquid in the pipeline is the conductor moving in the magnetic field, and the distance between the two electrodes is the length L of the conductor.Therefore, when the magnetic field strength B is constant, the induced electromotive force is proportional to the speed of motion.

Technical Parameters

Structure and Dimensions

Note: There are differences between the appearance and size of the electromagnetic flowmeter and the actual product, and the actual product shall prevail.

Structure and Dimensions 1

Structure and Dimensions 2

Sensor installation

The sensor is mainly composed of a detection probe, a mounting flange and a junction box (split installation).The shape of the sensor is a cylinder, and the excitation coil for exciting the electromagnetic field, the magnetic core and two electrodes in contact with the fluid are installed in the column cavity.The installation method of the sensor is divided into two types: the installation of the broken flow (without water) and the installation with pressure.

Sensor installation

Selection of sensor installation location

The sensor can be installed anywhere on the pipeline to be measured, and the pipeline must be completely filled with medium. The sensor can be installed on horizontally inclined or vertical pipelines.There must be at least 20D straight pipe section before the sensor, and at least 10D straight pipe section after the sensor.This avoids eddy currents and improves measurement accuracy.

sensor ground

The flow signal picked up by the detection electrode of the electromagnetic flowmeter is at the pv level, so external interference has a great influence on it.Therefore, a good grounding effect largely determines the measurement accuracy of the flowmeter.The measured fluid itself is an electrolyte conductor, and other irrelevant electromagnetic interference must be excluded.

Usually the flowmeter is installed on a metal pipe, and the pipe must be connected to the PE connector of the sensor (it has been connected before leaving the factory), and the PE connector should be connected to a good ground wire.

Plug-in electromagnetic flowmeter flow range table

range table