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MAGNETOFLOW™ M3000/4000 - Electromagnetic Flowmeter

Inductive electromagnetic flowmeters are best suitable for flow measurements of fluids with electrical conductivity from 5 μS/cm (20 μS/cm for demineralized water). This flowmeters range offers high accuracy. Results measurement are independant of density, temperature and pressure.

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The operating principle of the electromagnetic flow meter is based on Faraday’s law of magnetic induction: The voltage induced across any conductor, as it moves at right angles through a magnetic field, is proportional to the velocity of that conductor.
The voltage induced within the fluid is measured by two diametrically opposed internally mounted electrodes.
The induced signal voltage is proportional to the product of the magnetic flux density, the distance between the electrodes and the average flow velocity of the fluid.
Fuji Electric offers 2 electromagnetic measurement solutions for all your liquids flow management : MAGFLO flowmeters and MAGNETOFLOW flowmeters

The amplifier with modular design allows flow measurements in Ex zones 1 and 2, in either the mounted or remote version. The amplifier housing, made of powder-coated aluminium, is available in protection class IP67 and with a separate connection space. Programming can be done either with closed housing thanks to a magnetic pen or with open housing via three buttons. The four-line display shows all necessary data like actual flow, totalizer and status messages. The programmable excitation frequency even enables the amplifier to be adjusted for difficult metering applications. The new developed process for amplifier compensation enables a high accuracy, especially in the lower flow range.

Technical data

  • Power supply: 85 – 265 VAC, 45 – 65 Hz < 20 VA, optional 24 VDC
  • Accuracy: +/- 0,2% of actual flow, >= 0,5 m/s
                    +/- 1,25 mm/s of actual flow,<0,5 m/s
  • Repeatability: <0,1% of full scale
  • Flow range: 0,03 – 12 m/s
  • Conductivity: min. 5 µS/cm
  • Flow direction: bi-directional
  • Display: LCD, 4 lines / 16 characters, backlit, actual flow, 3 totalizers, status display
  • Programming: 3 buttons or via magnetic pen
  • Interface: RS232 for measuring values and programming
  • Analog output: 0/4- 20 mA <=750 ohms, flow direction is displayed upon a separate status output
  • Pulse output: active / passive selectable, 2 open collectors and 2 solid state relays
                         Open collector: active 18 VDC, 25 mA, passive 24 VDC, 20 mA (max. 0,5 W)
  • Frequency output: max. 10 kHz (open collector)
  • Status output: min./max. alarm, preselction, flow direction, error message, free configurable
  • Empty pipe detection: separate electrode
  • Low flow cutt off: 0-10%
  • Housing: Powder coated aluminium die cast
  • Protection class: IP67
  • Cable insertion: 3 x M 20
  • Ambient temperature: -20 up to +60°C

Ex proof version:

M3000 :
FM/CSA class I, div. 2 / zone 2
ATEX II 3 G Ex nA ia IIC T3 Ta = -20°C to +50°C, IP66 (Flowmeter)
ATEX II 3 G Ex nA [ia] IIC T3 Ta = -20°C to +50°C, IP66 (converter only)

M4000 :
FM/CSA class I, div. 1 / zone 1
ATEX II 2 G Ex d e ia IIC T3 Ta = -20°C to +50°C, IP66 (Flometer)
ATEX II 2 G Ex d [ia] IIC T4 Ta = -20°C to +50°C, IP66 (converter only)

Flange process connection for hazardous area Type V

  • Size : DN 6 to 600 (M3000) or DN 6 to 300 (M4000)
  • Nominal pressure : PN 10 PN 100

Type: Neoprene, Diameter: DN 25 to 600, Fluid temperature: 0 to 80°C

Type: Hard rubber, Diameter: DN 25 to 600, Fluid temperature: 0 to 80°C

Type: PFA, Diameter: DN 6 to 10, Fluid temperature: -40 to +150°C

Type: PTFE, Diameter: DN 15 to 200, Fluid temperature: -40 to +150°C

Type: Halar, Diameter: DN 300 to 600, Fluid temperature: -40 to +150°C

  • Electrodes material : Hastelloy C (Standard), Tantal, Platinum / Gold plated, Platinum / Rhodium
  • Flange connections DIN, ANSI, JIS, AWWA, etc
  • Dimension according to ISO 13359
  • Empty pipe electrode as Standard
  • Ground electrode in the same material than the measurement electrode
  • Ground ring in option
  • IP67 or IP68 protection in option.
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