Electro Magnetic Flow Meter for Beer / Waste Water / Sewage Water
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. Quick Details
1). It is high resistance, fast response design can make
undistorted collection of weak signal and fast response to the flow
changes. Its range rate can reach 100:1.
2). It has the function of low conductivity measurement.
3). It has the consistency of converter’s interchange, which can
avoid input parameters repeatedly.
4). Wide range of power supply mode is available (DC: 18V-36V/AC:
85V-265V).
5). It is the first domestic company that adopts the function of
saving settings before delivery,which can avoid the loss of the
parameters.
6). It adopts the international leading excitation technology,
which circuit is simple, stable,and reliable.
7). It has the function of infrared remote control and button
operation so as to make the operation more convenient.
8). It provides the function of zero correction of sensor and
automatic zero adjustment.
9). It has Chinese, English, Korean, Polish, Turkish, French and Portuguese
languages for option to satisfy different customers’ requirements.
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. 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 concentrations below the boiling point of
hydrochloric acid, but also resistant to non-oxidizing acid,
alkali, sulfuric acid, phosphoric acid, hydrofluoric acid, organic
acid corrosion. |
| Hc | Resistant to the corrosion of oxidizing acid, such as nitric acid
and mixed acid. The mixture of chromic acid and sulfuric acid,
oxidized salts, such as Fe3+, Q3+, and other oxidants, such as the
mixture of hypochlorite solution and seawater at higher than normal
temperature. |
| Ti | Resistant to corrosion of seawater, various chlorides, hyalphates,
oxidizing acids (including smoke nitric acid), organic acids or
alkalis, but not pure reduced acids (e.g. sulphuric acid,
hydrochloric acid). However, if the acid contains oxidants (e.g.
nitric acid, Fe3, Q3), corrosion resistance is 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. |
6. 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 |
7. 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 |
8. Packing
9. Product Photos
