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MELAN MEASUREMENT & CONTROL INSTRUMENTS (SHANGHAI) CO., LTD.
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Divided Type Carbon Steel Electromagnetic Flow Meter DN15

Melan Measurement & Control Instruments (Shanghai) Co.,Ltd.

Divided Type Carbon Steel Electromagnetic Flow Meter DN15

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Model Number : MLF

Place of Origin : China

MOQ : 1pc

Price : Negotiation

Payment Terms : T/T

Supply Ability : 500pcs per month

Delivery Time : 7-10 working days

Packaging Details : In Carton or Wooden Box

Product Name : Electromagnetic Flow Meter

Pipeline Diameter : DN15-DN2000

Accuracy : Up to 0.2%

Flange : GB/ANSI/JIS/BS/Others

Velocity : 0.3~10m/s

Liner Material : Rubber/PTFE/PU/Hard Rubber/PFA/FEP(F46)

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Electromagnetic Flow Meter Divided Type with Carbon Steel

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.

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. Selection of Liner Material

Liner Material Main Performance Application
PTFE

1 The most stable chemical properties in plastics, resistant to boiling hydrogen chloride and sulfuric acid, nitric acid, aqua regia, strong bases and various organic solvents, but not resistant to the corrosion of chlorine trifluoride, high temperature nitrogen trifluoride, liquid fluorine, liquid oxygen and ozone.

2 Low wear resistance.

3 Low negative pressure resistance.

1. -25~140℃

2. Strong corrosion medium, like strong acid and alkali

3. Healthcare medium

CR Oil proof, solvent resistance, oxidatite resistance and the resistance to the erosion of common medium like acid, alkali, salt, etc.

1. <80℃

2. Be able to measure sewage and mud

PU

1. Very good abrasive resistance, flexibility.

2. Low acid and alkali resistance.

1. <65℃

2. Neutral strong abrasion resistance medium

Hard Rubber

1 Room temperature resistance, hydrochloric acid, acetic acid, oxalic acid, ammonia, phosphoric acid and 50% sulfuric acid, sodium hydroxide, potassium hydroxide

2 Avoid strong oxidants

1. <80℃

2. General acid, alkali, salt solution

PFA

1. Can be used for most corrosive medium like acides, alkalis, and strong oxidant.

2. High material strength, resistance to aging, better than PTFE, EFP in high temperature

3. Injection molding for higher negative pressure

1. 40~180℃

2. Strong corrosion medium, like strong acid and alkali

3. Healthcare mdium

FEP(F46)

1. Hydrophobicity and non-viscous

2. Corrosion resistance is inferior to PFA

3. Negative pressure

1. 40~180℃

2. Strong corrosion medium, like strong acid and alkali

3. Healthcare mdium

4. Dimensional Sketches

a. Dimension of Converter

Divided Type Carbon Steel Electromagnetic Flow Meter DN15

Divided Type

Divided Type Carbon Steel Electromagnetic Flow Meter DN15

Integrated Type

Divided Type Carbon Steel Electromagnetic Flow Meter DN15

Battery Powered Type

b. Dimension of Sensor

Divided Type Carbon Steel Electromagnetic Flow Meter DN15

Pipeline Diameter Dimension
L W H
15 160 95 130
20 160 105 137
25 160 115 150
32 160 135 160
40 200 145 175
50 200 160 185
65 200 180 205
80 200 195 215
100 250 215 235
125 250 245 275
150 300 280 300
200 350 335 355
250 400 400 405
300 500 455 460
350 500 515 520
400 600 575 580
450 600 635 630
500 600 710 685
600 600 835 795
700 700 905 910
800 800 1020 1030
900 900 1120 1120
1000 1000 1245 1250
1200 1200 1465 1470

5. Configuration

MLF Series Electromagnetic Flow Meter Configuration
Model MLF
Sensor Installation S Flange Type Sensor
C Insertion Type Sensor
O Others
Pipeline Diameter 10 10mm
15 15mm
20 20mm
......
2000 2000mm
Electrode Installation F Standard Fixed Type
Electrode Material A 316L SS
B Hb
C Ta
D Ti
E Hc
F Tungsten Carbide
G Others
Liner Material R Rubber
P PTFE
O Others
Pipe Material B 304 SS (Standard)
C 316 SS
Flange Type G GB (Standard)
A ANSI
J JIS
B BS
O Others
Flange Material A 304 SS
B 316 SS
C #20 Carbon Steel (Standard)
Cover Material D 304 SS
E 316 SS
F Carbon Steel+ Epoxy Metallic Paint (Standard)
Matching Flange 0 Without Matching Flange (Standard)
1 With Matching Flange
Ground Ring 0 Without Ground Ring (Standard)
1 With Ground Ring
Rated Pressure 10 1.0MPa
16 1.6MPa
25 2.5MPa
40 4.0MPa
Working Temperature E ≤60℃
H ≤180℃(Divided Type)
Type I Integrated Type
D Divided Type
Output P Pulse
A 4-20mA
G RS485
H Hart
Q Others
Power Supply 0 220VAC
1 24VDC
2 Battery-powered
Protection Class 0 IP65 (Integrated/Divided Type)
1 IP67 (Divided Type)
2 IP68 (Divided Type)
Other Features R Heat Energy Function
P With PT1000
B Without PT1000
Explosion Proof 0 None
EX Explosive Proof

6.Instrument Inspection and Maintenance

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.


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Divided Type Electromagnetic Flow Meter

      

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