Plug in electromagnetic flowmeter, Faraday's law of electromagnetic induction

One,Plug in electromagnetic flowmeter, Faraday's law of electromagnetic inductionwide range of uses

The plug-in electromagnetic flowmeter is mainly used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. Including highly corrosive liquids such as acids, alkalis, salts, etc. Insertion type electromagnetic flow meters are widely used in industries such as petroleum, chemical, metallurgical, textile, food, pharmaceutical, papermaking, as well as environmental protection, municipal management, water conservancy construction, etc.

Schematic diagram of plug-in electromagnetic flowmeter

Main components

The plug-in electromagnetic flowmeter is composed of a plug-in electromagnetic flow sensor (referred to as the sensor) and a plug-in electromagnetic flow converter (referred to as the converter), which are used to measure the volumetric flow rate of various conductive liquids in pipelines.

measurement object

Measurement tube, electrode, excitation coil, iron core, and magnetic yoke housing. Used to measure the flow rate of conductive fluids in sectors such as tap water, steel, petroleum, chemical, power, industry, and water conservancy, as well as corrosive conductive liquids such as acids, alkalis, and salts.

Product Features

1. Measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity;

2. Measure the flow components inside the tube, with no pressure loss and low requirements for straight pipe sections;

3. Series nominal diameter DN15~DN3000. There are multiple options for sensor lining and electrode materials;

4. The converter adopts a novel excitation method, with low power consumption, stable zero point, and high accuracy. The flow range can reach 1500:1;

5. The converter can be integrated or separated from the sensor;

6. The converter adopts a 16 bit high-performance microprocessor, 2x16 LCD display, convenient parameter setting, and reliable programming;

7. The flowmeter is a bidirectional measurement system equipped with three integrators: forward total, reverse total, and differential total; Can display. Zhuang, reverse flow, and have multiple outputs: current, pulse, digital communication HART；

8. The converter adopts surface mount technology (SMT) and has self checking and self diagnostic functions

Application of plug-in electromagnetic flowmeter

Used to measure the flow rate of conductive fluids in sectors such as tap water, steel, petroleum, chemical, power, industry, and water conservancy, as well as corrosive conductive liquids such as acids, alkalis, and salts.

Product Features:

Corrosion resistant all stainless steel material ABS full mold production probe structure is simple, firm, without moving parts, and has a long service life:

Reliable measurement and strong anti-interference ability;

Small size, light weight, easy installation, and low maintenance;

Large measurement range, unaffected by changes in temperature, density, pressure, viscosity, conductivity, etc;

Zero pressure loss;

The ability to install and disassemble without interruption brings convenience to users' maintenance.

Compared to general electromagnetic flow meters, it has lower manufacturing and installation costs, making it particularly suitable for flow measurement in large and medium diameter pipelines.

Secondly,Plug in electromagnetic flowmeter, Faraday's law of electromagnetic inductionMain technical performance indicators

Flow velocity measurement range: (0.05-10) m/s

Plug in electromagnetic flowmeter

Measuring pipeline diameter: DN (100-3000) mm

Measurement accuracy: Level 0.5, Level 1.0, Level 1.5

Work pressure:<1.6MPa

Medium temperature: 0-80 ℃

Power consumption:<20VA

Conductivity of the tested liquid:>5 μ s/cm

Three,Plug in electromagnetic flowmeter, Faraday's law of electromagnetic inductionMain parameters of the measuring instrument

Disassembly and assembly method: After cutting off the flow, disassembly and assembly do not require cutting off the flow. After closing the ball valve, disassembly and assembly can be done

Accuracy: ± 1.5% ± 1.5%

Nominal diameter: DN300-DN3000

Measurable minimum flow rate: 0.1 meters per second

Measurable maximum flow rate: meters per second

Range ratio: 1:20, can be customized according to customer requirements

Display: optional

Output signal: 4-20mA

Communication interface: RS485 optional

Power supply: 220VAC, allowable deviation of 15% or+24VDC, ripple ≤ 5%

Explosion proof rating: Optional Exd [ia] qIICT5

Protection level: IP65, optional IP68

Power consumption of the whole machine: 6.5W

Measurement body (sensor) material: 304 stainless steel

Material of measuring element (electrode): 316L stainless steel

Measurement range:<130 ℃

Four,Plug in electromagnetic flowmeter, Faraday's law of electromagnetic inductionSelection of caliber and flow rate

install

On site plug-in electromagnetic flowmeter

The upstream straight pipe section for sensor installation shall not be less than 5D (D: pipe diameter), and the downstream straight pipe section shall not be less than 2D

Installation method:

（1） Vertical installation, the sensor should be inserted into the pipeline at an angle of less than 5 ° to the vertical diameter of the pipeline section, suitable for measuring clean media with low pipeline vibration.

（2） Tilted installation, with the axis of the sensor at a 45 ° angle to the axis of the measured pipeline, is suitable for measuring the flow rate of liquids with large diameters and other impurities in the measuring medium. This installation method has low water resistance and should not be tangled.

There are two methods for inserting an electromagnetic flow sensor: one is to insert it into the central axis of the measured pipeline, and the other is to insert it into the 0.25D position on the inner wall of the pipeline.

Installation of sensors

1. Clean the welding slag and burrs on the installation base of the tested tube.

2. Close the upstream flow control valve or use low-pressure water supply.

3. Install the DN50 ball valve onto the mounting base. Pay attention to the long cavity of the ball valve facing upwards, check if the ball valve can be fully opened and closed, and install the clamping thread seat, clamping nut, and rubber sealing ring onto the ball valve. Loosen the positioning nut. Insert the sensor into the measured pipeline through a ball valve, while paying attention to the direction of the sensor indicator rod and the direction of the fluid flow.