Electromagnetic Flowmeter

Electromagnetic Flowmeter


The working principle of electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction. When a conductor moves in the magnetic field, an induced electromotive force will be generated at both ends of the conductor in the direction perpendicular to the direction of the magnetic field and the moving direction.


Electromagnetic Flowmeter is a transducer that measures fluid flow by the voltage induced across the liquid by its flow through a magnetic field. A magnetic field is applied to the metering tube, which results in a potential difference proportional to the flow velocity perpendicular to the flux lines. The physical principle at work is electromagnetic induction. The magnetic flow meter requires a conducting fluid, for example, water that contains ions, and an electrical insulating pipe surface, for example, a rubber-lined steel tube.


-Various connection methods: Flange, wafer, thread, tri-clamp, insertion.
-Wide turn-down ratio: Up to 1500:1.
-Varies connection standard: GB, DIN, ANSI, JIS.
-Multiple liner material options: Hard rubber, PTFE, Polyurethane, PFA (PFA lining with metal meshes vacuum resistant), Tefzel (Tefzel lining with metal mesh is vacuum resistant).
-Various electrode material options: 316L, Hastelloy-C22, Hastelloy-B10, titanium, tantalum, platinum/iridium Alloy, Stainless steel coated with tungsten carbide.
-Detachable electrode structure: Online maintenance and replacement of electrodes.
-Protection grade: Support IP65, IP67, IP68.
-Remote converter: Suitable for separate installation for column or wall mounting requirements.
-Multiple programming options:
a) Button programming, easy programming operation.
b) Infrared remote-control programming, no need to open the shell to operate the instrument, suitable for explosion-proof applications.
c) Bus programming, connecting via the bus, remote operation of the instrument, and configuration.
-Various output/input signals: Analog current, frequency, pulse.
-Various alarm functions: Support self-check and self-diagnosis functions such as fluid empty pipe, excitation circuit breaker, and flow rate over/lower limit alarm.
-Various communication types: RS232, RS485, HART, Profibus-DP
-Explosion-proof certification: Support Ex d ib MB IIBT4 Gb


Diameter DN3-DN2000
Electrode Material SS316L, Hb, Hc, Ti, Ta, Pt
Liner Material Hard rubber, Polyurethane, PTFE, F46, PVDF, PEEK, Tefzel
Medium Conductivity ≥5μs/cm as default
Accuracy ±0.5% of rate; ±0.2% optional
Velocity Range 0.3-12m/s
Ambient Temperature -20℃~+60℃
Medium Temperature Rubber: ≤80℃
PTFE & F46: ≤120℃
PFA: ≤180℃
Nominal Pressure 0.6MPa~4.0MPa (according to caliber or special order)
Protect Level IP65, IP67, IP68 (remote type)
Output Pulse, 4-20mA, flow rate alarm
Communication Modbus, HART, Profibus DP
Power Supply 24V DC, 220V AC, Battery
Structure Compact Type, Remote Type
Process Connection Flange (DIN, ANSI, JIS, etc.)
Flange Wafer Type
Sanitary Tri-clamp Type
Thread Type
Insertion Type
Body Material Carbon Steel, SS304 (SS316 as optional)


Diameter DN3-DN20
Electrode Material SS316L, Hb, Hc, Ti
Liner Material PEEK
Medium Conductivity ≥5μs/cm as default
Accuracy ±0.5%-±1.0% of the rate
Velocity Range 0.3-10m/s
Ambient Temperature -20℃~+60℃
Medium Temperature -20℃~+100℃
Nominal Pressure 0.6MPa~1.6MPa
Protect Level IP65, IP67 (Blind)
Output Pulse
Communication RS485
Power Supply 24VDC±20% (19.2V-28.8V)
Structure Compact Type
Process Connection Threaded, G1/2, G3/4, NPT 1/2 or others, SS304/SS316
Body Material Aluminum with epoxy
Current Consumption < 150mA
Dimension(H×W×D) 150*100*70(mm)