Melan Measurement & Control Instruments (Shanghai) Co.,Ltd.
MELAN MEASUREMENT & CONTROL INSTRUMENTS (SHANGHAI) CO., LTD.
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DN400 Electromagnetic Flow Meter Compact Type for Water / Oil / Diesel
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 electrical conductivity of liquids or solids. In general, its electrical conductivity should be greater than 5 μ S / cm (the electrical conductivity of tap water and raw water is about 100 ~ 500 μS / cm), can also be used to measure various media such as acid, alkali, salt water, pulp or pulp. But these media cannot contain large amounts of magnetic materials and bubbles.
MLF electromagnetic Flowmeter is an instrument for measuring liquid fluidity. It is widely used in flow measurement in metallurgy, chemical industry, paper making, environmental protection, petroleum, textile, food, urban management, waterworks and other industries.
2. Features
MLF electromagnetic Flowmeter is explosion-proof design.
function of low conductivity measurement.
There are 9 language options to meet the needs of different customers.
Have self-regulation function and self-examination.
different outputs are optional: hart, RS485 Profibus ,4-20 mA, 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 Electrode Materials
| Electrode Material | Main Performance |
| 316L | Good corrosion resistance of nitric acid, sulfuric acid, acetic acid, alkaline liquid at room temperature < 5%, sulfite, seawater, acetic acid and other corrosion under certain pressure, can be widely used in petrochemical urea, vinylon and so on. |
| Hb | Good resistance to all hydrochloric acid concentrations below boiling point, as well as non-oxidizing acid, alkali, sulfuric acid, phosphoric acid, hydrofluoric acid, organic acid. |
| Hc | The corrosion resistance of oxidizing acids, such as nitric acid and mixed acids. A mixture of chromic acid and sulfuric acid, oxidizing salts such as Fe3+, Q3+, and other oxidizing agents such as a mixture of hypochlorite solutions and sea water at above-normal temperatures. |
| Ti | Resistant to corrosion by seawater, various chlorides, hypochlorites, oxidizing acids (including fuming nitric acid), organic acids or bases, but not by pure reducing acids (such as sulfuric acid and hydrochloric acid). However, if the acid contains oxidants (such as nitric acid, Fe3+, Q3+), the corrosion resistance will be reduced. |
| Ta | Good corrosion resistance similar to glass. Resistance to the corrosion of chemical medium(including hydrochloric acid and fumiing sulfuric acid), but can not be used for sodium hydromide fluid. |
| Pt-Ir | Have good corrosion resistance of all acid, and can be resistance to the corrosion of alkali, all salt except aqua regia, ammonium slat and few other medium |
| Tungsten Carbide | For pulp and sewage, good resistance to solid particle interference. |
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 | ||||||||||||||||||||||
7. Packing