4 Inch Compact Electromagnetic Flow Meter with Modbus RS485 Output
1. Introduction
MLF electromagnetic flow meter, composed of sensor and converter, works based on Faraday’s law of electromagnetic induction law. It is used to measure electrical conductivity of liquid or solid. Generally, the electrical conductivity should be over 5υS/cm(electrical conductivity of tap water, raw water is about 100~500υS/cm),It can also be used to measure various media like acid, alkali, saline solution, paper pulp or pulp and so on. But these media can’t contain a lot of magnetic materials and bubbles.
MLF electromagnetic flow meter is a kind of instrument which is used for measuring the flow conductivity liquid. The meter is widely used in flow measuring of Metallurgy, Chemical Industry, Paper Industry,Environmental Protection, Oil Industry, Textile Industry, Food Industry and City Administration, Water Works,etc.
2. Features
The MLF electromagnetic flow meter is for explosive proof design.
l It has the function of low conductivity measurement.
l It has 9 languages for option to satisfy different customers’ requirements.
l It has the function of self-adjustment and self-checking.
l A variety of outputs are optional:Hart, RS485, Profibus, 4-20mA, Frequency, Pulse.
3. Specification
MLF Type | Divided Type | Integrated Type | Explosive Proof Integrated Type | Battery Powered Type | Heat Energy Type |
Accuracy | ±0.2% or ±0.5% | ||||
Pipeline Diameter | DN10-DN2000 | DN10-DN600 | DN25-DN2000 | ||
Flange | GB, ANSI, JIS, BS, Others | ||||
Pressure | DN10-DN600 1.0 1.6 2.5 4.0MPa | ||||
DN700-DN2000 0.6 1.0 1.6MPa | |||||
Liner Material | CR, PTFE, PU, Hard Rubber, PFA, FEP(F46) | ||||
Conductivity | ≥5µs/cm(Please contact us if it is less than 5µs/cm) | ||||
Electrode | 316L SS, Hb, Ta, Ti, Hc, Tungsten Carbide, Others | ||||
Protection Class | IP65, IP66, IP67, IP68 | ||||
Medium Temperature | -25~180℃ (Please refer to liner material) | -25~80℃(Please refer to liner material) | -25~180℃ (Please refer to liner material) | ||
Ambient Temperature for Accuracy Influence | <±0.1%/10℃ or <±0.25%/10℃ at the ambient temperature of -25~60℃ | ||||
Repetability | ≤±0.1% or ±0.25% | ||||
Analog Output Error | ≤±0.02mA | ||||
Velocity | 0.3~10m/s | ||||
Electrical connection | M20x1.5 Seal Cartridge, GB1/2, NPT1/2 | ||||
Output | 4-20mA, Pulse, RS485, Hart, Profibus |
4. Selection of Liner Material
Liner Material | Main Performance | Application |
PTFE | 1. Have the most stable chemical properties in plastic and resistance to boiling hydrochlor and sulfuric acid, nitric acid aqua regia, strong alkali, and all kinds of organic solvents, but can not resist the corrosion of chlorine trifluoride, high temperature nitrogen trifluoride, liquid fluorine, liquid oxygen and ozone. 2. Low abrasion 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. Good resistance to room temperature, 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 |
5. Dimensional Sketches
a. Dimension of Converter
Divided Type
Integrated Type
Battery Powered Type
b. Dimension of Sensor
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 |
6. 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 |