EFS803 Electromagnetic Flowmeter


isolvThe measuring principle of the electromagnetic flowmeter (Magmeter) is based upon the Faraday’s Law of electromagnetic induction; whereby a voltage is induced by an electrical conductor passing through a magnetic field.

In electromagnetic flowmeter, the medium acts as the electrical conductor when flowing through the meter tube, the induced voltage is proportional to the average flow velocity (the faster the flow rate, the higher the voltage).

The induced voltage is picked up by a pair of electrodes (mounted in the meter tube) and transmitted to a flow transmitter to produce various standardized output signals.Using the pipe cross-sectional area, the volumetric flow rate is calculated by the transmitter.

The following equation is applicable to the induced voltage: U = kBVD where


• Reliable flow measurement for conductive fluid > 5mS/cm.

• Process medium temperature, viscosity, density has no influence on the flow measurement.

• Flow sensor is maintenance free, no moving part and straight through flow tube (no pressure loss).

• With wide selection of lining and electrodes material, flow measurement of very corrosive liquid (e.g. acids, caustic and corrosive chemicals) is not an issue.

• Electromagnetic flowmeter can be used for precise flow measurement of all electrically    conductive liquids sludges, slurries, sewage, milk, water waste water.

• iSOLV electromagnetic flowmeter has many applications across many industries

• Water waste water Treatment

• Building Automation (HVAC)

• Food & Beverage

• Chemical

• Pulp and paper


Version Integral Remote
Accuracy 0.5% (0.2% Optional)
Repeatability +/- 0.1%
Full Scale Range Setting 0.3 m/s to 10 m/s (Optional up to 15 m/s)
Fluid Conductivity > 5μS/cm
Fluid Temperature -25ºC to 180ºC (Depending On Liner Material & Coil Insulation Class)
Ambient Temperature -40ºC to 65ºC
Calibration Certificate Wet Calibration – 3 Points (Additional Test Points Upon Request)
Compliant With N/A OIML R49 Type P

Process Connection

Size DN3-DN1000 DN3-DN3000
Type Flange – DIN 2501/ ANSI/JIS
Pressure Rating Refer To Page 5. Higher Pressure Rating Available On Request

Flow Sensor

Tube (Material) SS304
Liner (Wetted Parts) Hard Rubber (Std) / PTFE/ PFA / Others On Request
Signal Electrode (Wetted Parts) SS316 (Std)/ Hastelloy C/ Tantalum/ Titanium
Process - Flange Carbon Steel (Std)/ SS304 (Optional With Price Adder)
Housing Steel With Epoxy Paint
Grounding Rings SS304 (Std) / SS316
Flow Direction Bi-directional (Forward / Reverse)
Protection Class IP67 IP67 / IP68
Field Coils E class = 130ºC / H class = 180ºC


Model No CFT183 RFT203
Power Supply 85 - 253 VAC / 24 VDC
Display 2 x 16 Alpha Numeric Character LCD
In-Situ Verification Optional
Self-Diagnostics Optional
Housing Material Aluminium Alloy
Protection Class IP65 / IP66 (Optional)
Cable Length N/A 10m (Std) Other Length
Available up to 50m
Cable Entry M22x 1.5 M20x 1.5


Current 4-20mA
Pulse ≤5kHz Frequency D. C.
Contact Relay 1 no for Alarm/ Empty Pipe / Third Electrode (Optional)
Communications Standard: RS485 (Modbus Protocol)
Optional: HART Protocol / Profibus DP

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