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Smart Electromagnetic Flow Meter Wastewater Flow Meter

Model Number:MLF

Minimum Order Quantity:1pc

Delivery Time:7-10 working days

Payment Terms:T/T

Place of Origin:China

Price:Negotiation

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

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Location: Shanghai Shanghai China

Address: No.21, Lane 697, Guangfulin Road, Songjiang District, Shanghai, China

Supplier`s last login times: within 13 hours

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Product Details

Smart Electromagnetic Flow Meter Wastewater Flow Meter

1. Introduction

MLF electromagnetic flowmeter 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. Generally, its conductivity should be greater than 5μS/cm (the conductivity of tap water, raw water is about 100~500μS/cm). it can also be used to measure various media such as acid, alkali, brine, pulp or pulp and other medium. But these medium can not contain a large number of magnetic substances and bubbles.

MLF electromagnetic flowmeter is an instrument to measure liquid fluidity. Widely used in metallurgy, chemical, paper, environmental protection, petroleum, textile, food, urban management, water plants and other industries of flow measurement.

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) MLF electromagnetic flowmeter is explosion-proof design.

3) Function of low conductivity measurement.

4) There are nine language(Chinese, English, Korean, Polish, Turkish, French and Portuguese languages) options to meet the needs of different customers.

5) It has the function of self-regulation and self-examination.

6) Different outputs are optional: Hart,RS485 Profibus,4-20mA, frequency, pulse.

3. Selection of Liner Material

Liner Material

Main Performance

Application

PTFE

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

2 Low wear resistance.

3 Low negative pressure resistance.

1. -25~140℃

2. Strong corrosion medium, like strong acid and alkali

3. Healthcare medium

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

1. Very good abrasive resistance, flexibility.

2. Low acid and alkali resistance.

1. ＜65℃

2. Neutral strong abrasion resistance medium

Hard Rubber

1 Resistance to room temperature, hydrochloric acid, acetic acid, oxalic acid, ammonia, phosphoric acid and 50% sulfuric acid, sodium hydroxide and 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. Selection of Electrode Materials

Electrode Material	Main Performance
316L	Good corrosion resistance to nitric acid, less than 5% corrosion of sulfuric acid, acetic acid, alkaline liquid, sulfite, seawater and acetic acid under certain pressure at room temperature, and can be widely used in petrochemical urea, vinylon and so on
Hb	Good resistance to hydrochloric acid with concentration lower than boiling point and corrosion of non-oxidizing acid, alkali, sulfuric acid, phosphoric acid, hydrofluoric acid and organic acid.
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 the corrosion of seawater, various chlorides, hypochlorite, oxidized acid (including fuming nitric acid), organic acid or alkali, but not pure reducing acid (such as sulfuric acid and hydrochloric acid). However, if the acid contains oxidants (such as nitric acid, Fe3+, Q3+), the corrosion resistance will decrease.
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
Pipeline Diameter	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. Advantages & Disadvantages

There are numerous benefits to using electromagnetic flowmeters to perform fluid flow measurements. They are generally non-invasive and have no moving parts, reducing the risk of breakdowns and the frequency of repairs. A decrease in flowmeter pressure is also usually no greater than that of an equivalent pipe length, reducing the piping costs. Some of the other major advantages provided by magnetic flowmeters include:

Power usage is relatively low, with electrical power requirements as low as 15 watts for some models.
They are mechanically obstructionless and can be equipped with abrasion-resistant liners, making them effective for measuring slurries and other erosive fluids.
They are capable of dealing with most kinds of acids and bases, as well as water and water-based solutions, due to lining materials that are both insulators and have corrosion resistance.
Relatively small amounts of electrode metals are needed for magnetic flowmeters.
They can measure both very low flows and very high volume flow rates, with a minimum diameter of roughly 0.125 inches and a maximum volume of up to 10 cubic feet.
They can usually measure multidirectional flow, either upstream or downstream.

Despite these advantages, magnetic flowmeters also present certain difficulties for flow rate measurement. These flowmeters are only effective on conductive fluids, and materials such as unmixed hydrocarbons and gases cannot be measured. However, magnetic materials themselves may also present problems, as hydrodynamic effects can alter the normal flow pattern and disturb the velocity rate enough to interfere with operations. Depending on their size and capacity, magnetic flowmeters can be relatively heavy, and those with higher corrosion and abrasion resistance can be expensive.