RS485 4.0MPa IP65 DN100 Electromagnetic Flow Meter

Electromagnetic Flow Meter for Water Flow Rate Measurement

1. Introduction

The MLF electromagnetic flow meter is based on Faraday's law of electromagnetic induction and consists of sensors and converters. Used to measure the conductivity of a liquid or solid. In general, its conductivity should be greater than 5μs/cm (tap water, raw water conductivity of about 100 to 500μs/cm), can also be used to measure acids, alkali, brine, pulp or pulp and other media. However, these media must not contain large amounts of magnetic substances and bubbles.

MLF electromagnetic flow meter is an instrument for measuring liquid flow. Widely used in metallurgy, chemical, paper, environmental protection, petroleum, textiles, food, urban management, water plants and other industries flow metering.

2. Working Principle

The principle of the sensor is based on Faraday’s law of electromagnetic induction.

It is installed a pair of detection electrodes on the pipe wall,where the measurement pipe axis

and magnetic field lines are vertical. When the conductive liquid cuts magnetic field lines and

produces induced electromagnetic force.Which can be measured by the two electrodes on the

meter pipe.The result can be calculated by formula: Induced electromotive force,(flow signal)

E=KBDV

E——Induced electromotive force,V；

K——meter constant；

B——Magnetic flux density,T；

D——Internal diameter of measuring pipe,m；

V——Average velocity of pipe section,m/s.

1MLF Series Electromagnetic Flow Meter

Assume the volume of liquid as qv(m3/s),qv=πD2V/4),so in the formula E=(4kB/πD)qv=kqv,

K is meter constant,K=4kB/πD.

Actually, the electromagnetic flow meter consists of two parts, transmitter and sensor, the

measuring electrodes inspect the electromotive force, and transmit to the converter, the

converter provides excitation current.

E is usually called a flow signal, after processing the flow signal by converter, output 4~20 mA/

pulse(or frequency) signal which is proportional to the flow rate, then the flow rate recording,

adjusting can be achieved.

3. Features

MLF electromagnetic flowmeter is explosion-proof design.

The function of low conductivity measurement.

There are 9 language options to meet the needs of different customers.

There are self-regulating functions and self-checking.

Different outputs are optional: Hart, RS485,Profibus, 4-20mA, frequency, pulse.

4. Specification

5. Dimensional Sketches

a. Dimension of Converter

Divided Type

Integrated Type

Battery Powered Type

b. Dimension of Sensor

6. Configuration

7. Instrument Testing & Maintenance

Electromagnetic flowmeter has self-diagnosis function. In addition to power supply and hardware circuit faults, the system also alarms other faults in general use. These messages are prompted in the bottom right corner of the screen.

Maintenance and repair

A) The sensor installation site shall meet the requirements of Section 4, and please keep the shell clean;

B) The transmitter shall be placed in a clean, ventilated and dry place;

C) The instrument shall be inspected every two years. For high-precision users, the instrument shall be submitted for review.

Transportation and storage

A) The instruments must be packed well before transportation and handled with care during loading and unloading.

B) The storage site must be dry and ventilated to avoid corrosive gas, and the ambient temperature should not be too low or too high;

C) Storage time should not exceed three years.

3. Open the box for inspection

A) The package must not be opened with a heavy hammer. Care must be taken not to damage the instrument

B) Carefully check the contents according to the packing list.

Melan Measurement & Control Instruments is located in Shanghai City. It is a high-tech manufacturer specialized in the design, development, manufacturing and sale of measurement and control instruments.

Our products are widely used in various fields, including electricity, chemical industry, metallurgy, brewing, oil and gas, textile, water conservancy, environmential protection, etc.

We own independent-courtyard modemized manufacturing workshops and an open office building. Melan has accumlated production and management experience in instruments from European and American and domestic famous companies.

We own first-class talent team, and all the products have reached advanced level at home and abroad. We provide our customers with complete and professional test control solutions and high-tech and high-quality products.

Melan is your reliable friend and partner. We are willing to try our best as dedication and perfection as motivation.

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