ANSI IP65 10m/s Electromagnetic Seawater Flow Meter

                                             Electromagnetic Flow Meter Manufacturer / Seawater Flow Meter​

1. Introduction

MLF electromagnetic flowmeter works according to Faraday's law of electromagnetic induction, and is composed of sensors and converters. Used to measure the conductivity of liquid or solid. In general, its conductivity should be greater than 5μs/cm (tap water and raw water conductivity is about 100 ~ 500μs/cm), and it can also be used to measure acid, alkali, brine, pulp or pulp and other media. However, these media cannot contain a large amount of magnetic substances and bubbles.

MLF electromagnetic flowmeter is an instrument for measuring liquid fluidity. Widely used in metallurgy, chemical industry, paper making, environmental protection, petroleum, textile, food, urban management, water plant and other industries.

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.

MLF 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. Specification

4. Configuration

5.Instrument Inspection and Maintenance

Electromagnetic flow meters have a self-diagnosis function. In addition to power and hardware circuit failures, the system also alerts to other faults in general use. This information is prompted in the lower right corner of the screen.

1 Maintenance and repair

a) The sensor installation site should comply with section IV requirements, please keep the housing clean;

b) The transmitter should be placed in a clean, ventilated and dry place;

c) The instrument needs to be checked every two years and for high-precision users, the instrument needs to be submitted for review.

2 Transport and storage

a) The instrument must be packed before transport and handled with care.

b) Storage sites must be dry and ventilated to avoid the erosion of corrosive gases, and the ambient temperature should not be too low or too high;

c) Storage time should preferably not exceed three years.

3 out-of-the-box inspection

a) The package cannot be opened with a heavy hammer and care should be taken not to damage the instrument

b) Check the contents carefully according to the packing slip.

6. Packing