Brass Water Electromagnetic Flow Meter Electro Magnetic Flowmeter
Electromagnetic flow meters, or magmeters, are comprised of a transmitter and sensor that together measure flow. The magnetic flow meter’s sensor is placed inline and measures an induced voltage generated by the fluid as it flows through a pipe. The transmitter takes the voltage generated by the sensor, converts the voltage into a flow measurement and transmits that flow measurement to a control system.
A magmeter utilizes a set of coils and a pair of electrodes for flow measurement. The meter’s coils are driven by the transmitter with an applied current. Once powered, a magnetic field is formed between both coils. When the pipe is full and the fluid begins to flow, the force of the magnetic field causes the negatively and positively charged particles of the fluid to separate as they pass through the magnetic field. This separation causes an induced voltage between the electrodes and sensor.
The flow principle behind magnetic flow meters is known as Faraday’s Law, mathematically defined as E=k*B*D*V. The induced voltage (E) is directly proportional to the velocity (V) of the fluid moving through the magnetic field (B). The induced voltage is carried to the transmitter through the electrode circuit. The transmitter then converts this voltage into a quantifiable flow velocity. The volumetric flow rate of the fluid is calculated using this known velocity along with the area of the pipe.
Magnetic flow meters are well suited for a variety of applications across a range of industries including pulp and paper, metals and mining, water and wastewater, food and beverage, chemical and petrochemical and oil and gas. Because the magnetic flow meter design does not leave any protrusions or obstructions in the pipe, they are able to accommodate an array of applications from clean and sanitary liquids to slurries and highly corrosive or abrasive fluids.
Features
1. There are no flowing and blocked flow parts in the pipeline of the 50mm water oil electromagnetic flow meter, and there is almost no additional pressure loss in the measurement.
2. The measurement result of the 50mm water oil electromagnetic flow meter has nothing to do with physical parameters, such as flow distribution, fluid pressure, temperature, density and viscosity.
3. The electromagnetic flowmeter uses a fast, high-precision 16-bit embedded processor to enhance the measurement stability.
4. The 50mm water oil electromagnetic flow meter has anti-interference and high reliability, and the measurement range is up to 150: 1.
5. The flowmeter adopts ultra-low EMI switch, and the power supply voltage range is wide.
Product Parameters
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Product Name |
Electromagnetic Flowmeter |
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Repeatability error |
+/-0.1% |
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Accuracy class |
0.5 class, 1.0 class |
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Measured medium temperature |
Common rubber lining: -20~+60 ° c |
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High temperature rubber lining: -20~+90 ° c |
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PTFE lining: -30~+100 ° c |
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High temperature vinyl lining: -30~+180 ° c |
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Rated working pressure |
pipeline: DN10~DN65: ≤ 2.5MPa;DN80~DN150: ≤ 1.6MPa; DN200~DN1200: ≤ 1.0MPa |
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Flow rate range |
0.3~15m/s |
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Measured fluid conductivity |
≥5μs/cm liquid |
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Output |
4~20mA / 4~20mA + Hart |
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Electrode material |
316L, titanium (Ti), tantalum (Ta), Hastelloy (H), Platinum (Pt) or other special electrode materials |
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Working power supply |
85~265VAC / 24VDC / Battery |
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Straight pipe length |
pipe: ≥ 5DN in the upper reaches, downstream of greater than or equal to 2DN |
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Connections |
Flange |
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Protection grade |
standard: IP65; IP68(optional) |
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Explosion-proof mark |
mdllBT4 |
Deatail Images
Precautions
1. Try to avoid ferromagnetic objects and equipment with strong electromagnetic fields, so as to avoid the magnetic field affecting the working magnetic field of the sensor and the flow signal.
2. should be installed in a dry and ventilated place, to avoid sun and rain, the ambient temperature should be -20 ~ +60 ° C, relative humidity is less than 85%.
3. There should be plenty of space around the flowmeter for easy installation and maintenance.
Installation requirements
The measurement principle of the electromagnetic flowmeter is that it does not depend on the flow characteristics. If there is a certain turbulence and vortex inside the pipeline, it will be generated in the non-measurement zone (such as elbow, tangential current limit or half-opening shut-off valve upstream). Measurement is irrelevant. If steady-state eddy currents in the measurement zone affect the stability of the measurement and the accuracy of the measurement, then some measures should be taken to stabilize the flow rate distribution:
A. Increase the length of the straight pipe before and after.
B. Using a flow stabilizer.
C. Reduce a section of the measuring point.
