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Clamp Electromagnetic Flow Meter
Clamp Electromagnetic Flow Meter
Clamp Electromagnetic Flow Meter

Wafer Electromagnetic Flow Meter

Size: DN25mm-DN200mm
Nominal Pressure: 1.6Mpa
Accuracy: ±0.5%(Standard), ±0.3%(optional) ±0.2%(optional)
Measuring Range: 0.5m/s-15m/s
Technical Data
Wafer electromagnetic flow meter is a kind of volume flow meter. It uses a new generation of special high-quality lining technology and a special mirror-polished PFA lining, which is especially suitable for the measurement of viscous pulp and gypsum slurry. Its detachable electrode makes maintenance more convenient.

Principle of Wafer electromagnetic flow meter : The product is based on Faraday's law of electromagnetic induction, used to measure the conductance greater than 20 μS/cm volume of conductive liquid flow. In addition to measuring the general volume of conductive liquid flow, but also can be used to measure strong acid, alkali and other strong corrosive liquids and mud, pulp, etc.
Wafer Electromagnetic Flow Meter Advantages and Disadvantages
Wafer electromagnetic flow meter has short body, it can be installed in narrow areas such as well, ditch, irrigation pipe, etc.
It matches all flanges like ANSI, DIN, JIS, etc. So if you don’t know the flange standards, you can choose this type.
And wafer electromagnetic flow meter adopts harmless and durable stainless steel as raw material(SS304 or SS316), so it can be used for drinking water, underground water, etc. For food grade measurement, we suggest customer use SS316 material.
Wafer Electromagnetic flow meter is also very cheap, normally it is cheaper 10% than same diameter electromagnetic flow meter with flange connection.
Wafer electromagnetic flow meter is easy to delivery, save your freight fee. Not only its body is short and thin, but its weight is also very light.
It has multiple output signals for choose. It has current output and pulse output for connecting with PLC or other devices. And you can also read flow measurement by RS485/HART/Profibus
Wafer Electromagnetic Flow Meter Application
Electromagnetic flow meter is widely used in water treatment, food industry, pharmaceutical, petrochemical, paper mill, chemical monitoring etc. 
In the metallurgical industry, it is often used to control the flow of cooling water for continuous steel casting, continuous steel rolling, and steel-making electric furnaces; 
In the field of water supply and drainage in public utilities, electromagnetic flow meters are often used for the transfer measurement of finished product water and raw water in water plants;
In the pulp process of the paper industry, electromagnetic flow meters are involved in the measurement of the flow of grinding pulp, water, acid, and alkali; 
In the coal industry, measuring coal washing and pipeline hydraulic conveying coal slurry.
For food and beverage industries, it is used for beer and beverage filling measurement.
For chemical and petrochemical industries, it is used to measure corrosive liquids, such as acids and alkalis etc. 
Water Treatment
Water Treatment
Food Industry
Food Industry
Pharmaceutical Industry
Pharmaceutical Industry
Paper Industry
Paper Industry
Chemical Monitoring
Chemical Monitoring
Metallurgical Industry
Metallurgical Industry
Public Drainage
Public Drainage
Coal Industry
Coal Industry
Technical Data

Table 1: Wafer Electromagnetic Flow Meter Specification

Size DN25mm-DN200mm
Nominal Pressure 1.6Mpa
Accuracy ±0.5%(Standard)
±0.3% or ±0.2%(Optional)
Electrode SUS316L, Hastelloy B, Hastelloy C,
Titanium, Tantalum, Platinum-iridium
Structure Type  Integral type, remote type, submersible type, ex-proof type
Medium Temperature -20~+60degC(Integral type)
Remote type(PTFE/PFA/FEP) -10~+160degC 
Ambient Temperature -20~+60degC
Ambient Humidity  5~90%RH(relative humidity) 
Measuring Range 0.5m/s-15m/s
Conductivity >5us/cm
Protection Class IP65(Standard); IP68(Optional for remote type)
Output Signal 4-20mA, pulse/frequency, relay
Communication MODBUS RTU RS485, HART(Optional), GPRS/GSM(Optional)
Power Supply  AC220V(Can be used for AC85-250V)
DC24V(Can be used for DC20-36V)
DC12V(Optional),Battery Powered 3.6V(Optional)
Power Consumption <20W
Explosion Proof ATEX Exdll T6Gb

Table 2: Wafer Electromagnetic Flow Meter Flow Range

Size Flow Range & Velocity Table
(mm) 0.1m/s 0.2m/s 0.5m/s 1m/s 4m/s 10m/s 12m/s 15m/s
25 0.177 0.353 0.883 1.766 7.065 17.663 21.2 26.494
32 0.289 0.579 1.447 2.894 11.575 28.938 34.73 43.407
40 0.452 0.904 2.261 4.522 18.086 45.216 54.26 67.824
50 0.707 1.413 3.533 7.065 28.260 70.650 84.78 105.98
65 1.19 2.39 5.97 11.94 47.76 119.40 143.3 179.10
80 1.81 3.62 9.04 18.09 72.35 180.86 217.0 271.30
100 2.83 5.65 14.13 28.26 113.04 282.60 339.1 423.90
125 4.42 8.83 22.08 44.16 176.63 441.56 529.9 662.34
150 6.36 12.72 31.79 63.59 254.34 635.85 763.0 953.78
200 11.3 22.61 56.52 113.04 452.16 1130.40 1356 1696
Suggest Velocity: 0.5m/s - 15m/s

Table 3: Wafer Electromagnetic Flow Meter Size

Diameter φA(mm) φB(mm) φC(mm) H(mm) L(mm)
DN25 60.5 68 22 295 100
DN32 68.5 76 30 303 100
DN40 74.5 89 36 316 100
DN50 90.8 102 48 329 100
DN65 109.8 119.5 64 346.5 150
DN80 120.7 133 77 360 150
DN100 150.2 159 102 386 150
DN125 174.8 190 121 417 200
DN150 204.7 219 147 446 200
DN200 257.8 273 207 500 200

Table 4: Wafer Electromagnetic Flow Meter Selection

Caliber DN25mm-DN200mm 1
Nominal Pressure 1.6Mpa 1
Connection mode Clamp connection 1
Liner material PTFE 1
Electrode material 316L 1
Hastelloy B 2
Hastelloy C 3
Titanium 4
Platinum-iridium 5
Tantalum 6
Stainless steel covered with tungsten carbide 7
Structure type Integral type 1
Remote type 2
Remote type immerse 3
Integral type Ex-proof 4
Remote type Ex-proof 5
Power 220VAC E
output communication Flow volume 4-20mADC/pulse A
Flow volume 4-20mADC/RS232 communication B
Flow volume 4-20mADC/RS485 communication C
Flow volume HART output/with communication D
Converter figure Square A
Circular B
Wafer Electromagnetic Flow Meter Installation & Maintainance
1. Installation
First of all, we need choose a pair of matching flanges. Then connect the flow meter with pipeline.
Wafer electromagnetic flow meter should be installed correctly to ensure good measurement. Normally we need leave 10D(10 times of diameter) straight pipe distance before wafer electromagnetic flow meter and 5D behind wafer electromagnetic flow meter.
And try to avoid elbow/valve/pump or other device which will influent the flow speed. If the distance is not enough, then please install flow meter according to follow picture.

lnstall at the lowest point and vertical upward direction
Don't install at the highest point or vertical downward diection

When drop is more than 5m, install exhaust
valve at the downstream

lnstall at the lowest point when used in open drain pipe

Need 10D of upstream and 5D of downstream

Dont' install it at the entrance of pump, install it at the exit of pump

lnstall at the rising direction
2. Maintenance
Routine maintenance: only need to make periodic visual inspections of the instrument, check the environment around the instrument, remove dust and dirt, ensure that no water and other substances enter, check whether the wiring is in good condition, and check whether there are newly installed strong electromagnetic field equipment or newly installed wires near the instrument Cross-instrument. If the measuring medium easily contaminates the electrode or deposits in the measuring tube wall, it should be cleaned and cleaned regularly.
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