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Electromagnetic Magnetic Flow Meter For Beer Liquid Dairy Sanitary Flow Meter

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

Electromagnetic Magnetic Flow Meter For Beer Liquid Dairy Sanitary Flow Meter

Country/Region	china
City & Province	shanghai shanghai
Categories	Camera Chargers

Product Details

Electromagnetic Magnetic Flow Meter For Beer Liquid Dairy Sanitary Flow Meter

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.
It has the function of low conductivity measurement.
It has Chinese, English, Korean, Polish, Turkish, French and Portuguese languages languages for option to satisfy different customers’ requirements.
It has the function of self-adjustment and self-checking.
A variety of outputs are optional:Hart, RS485, Profibus, 4-20mA, Frequency, Pulse.

3. Application:

MLF electromagnetic flow meter is a kind of instrument,used for measuring the flow conductivity liquid, which 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.

4. 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

5. 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

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. 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

6. 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.

7. 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

8. Instrument Detection & Maintenance

Electromagnetic flow converter has self-diagnosis function. In addition to the power and hardware circuit fault, The system also give alarm to other faults in general usage. These information are given accordingly prompts in the lower right of the screen.

1. Maintenance and repair

a) Sensor installation site should be consistent with the section four requirements, Please keep the housing clean and tidy;
b)Transmitter should be placed in a clean, ventilated, dry place;
c)Need to inspect every two years, for high precision users, instrument need to be submitted to censorship.

2. Transportation and storage

a)The instrument must be packed before transportation, be carefully handled when loading and unloading.
b)Storage site must be dry, ventilated, avoid corrosive gas erosion, the ambient temperature is not too low or too high;
c)Storage time better not exceed three years.

3. Unpacking and checking

a) The packing can’t be opened with heavy hammer, and should be careful not to damage the instrument
b) Check the content carefully according to the packing list.

9. 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.