Electromagnetic Flow Meter

Electromagnetic Flow Meter:

Integrated Electromagnetic Flow Meter

Split Type Electromagnetic Flow Meter

Insertion Type Electromagnetic Flow Meter










  • No moving parts, no flow components in pipe, almost no additional pressure loss when measure it, low requirement for straight pipe.
  • Measurement results not link with the velocity distribution, fluid pressure, temperature, density, viscosity and other physical parameters.
  • In the scene, it can modify range on-line according to user’s actual needs.
  • High-definition backlit LCD liquid crystal display, it can make reading easier when the direct sunlight or in a dark room. All Chinese menu operation, easy to use, simple operation, easy to understand.
  • It has high reliability with SMD components and surface mount (SMT) circuit.
  • Derive the 16-bit embedded microcontroller processor, a fast calculation speed, high precision, programmable frequency low-frequency rectangular wave excitation; improve the stability of the flow measurement, low power consumption.
  • The whole processing of the digital quantity, strong anti-interference ability, reliable measurement, high accuracy, the flow measurement range of up to 150:1
  • Lower EMI switching power supply, using of the power supply voltage variation range is big, it is good resistance to EMI.
  • It has three integrators inside, reverse the cumulative amount respectively showed positive cumulative integrating quantity and difference, interior has not power off clocks, it can record 16 times power lost time.
  • With RS485 and RS232, Hart and Modbus digital communication signal output.
    Converter has the function of self-diagnosis alarm output, empty load detection alarm output, the output flow rate on the lower limit alarm, batch control, etc.
  • High voltage electromagnetic flow meter sensor adopts the technology of the PFA and mesh lining, high pressure resistance, resistance to negative pressure, special application of petroleum, chemical industry, etc.
  • The sensor adopts advanced processing technology; make the instrument has a good ability to resist negative pressure.
  • Derive hours record function, total hours for the unit to record the total flow rate, it is suitable for the measuring system.

2.Main technical parameters

1.The series of nominal diameter DN (mm)

  • Flange type with PTFE lining: DN6~ DN1200
  • Pipe type with rubber lining: DN40 ~ DN3000
  • Insertion type: DN100 ~ DN3000, special custom DN32 ~

2. The structure form

  • Integrated type, Split type, Immersion type, Explosion type.

3. Sensor connection way

  • Flange type, Insertion type, Clamp on type, Healthy type, Diving type

4. Flow direction

  • Positive and reverse, net flows
  • Range rate: 150:1
  • Repeatability error: ±0.1% measurement value.

5. Accuracy grade

  • Flange type, Clamp on type, Healthy type: ±0.5%, ±0.2% or ±0.3% (Optional)
  • Insertion type: velocity of 0.5 m/s or less, ±1.5%;Full scale velocity of > 1 m/s, ±1.0%
  • Diving type: ±1.0%

6. Protection grade

  • IP65, IP67, IP68 (optional)

7. Medium temperature:

  • Neoprene/polyurethane rubber lining: – 40 ~ + 70 ℃
    PTFE / F46 lining: – 30 ~ + 180 ℃
  • Insertion type: – 30 ~ + 80 ℃

8. Working Pressure

  • DN6~DN300:≤1.6MPa
  • DN350~DN1000:≤1.0MPa
  • DN1200~DN2200:≤0.6MPa(special pressure can custom ,highest pressure 42MPa)
  • Insertion: nominal pressure: 1.6 MPa

9. Electrode type:

  • Standard type , Scraper type, Replace type.

10. Electrode material

  • 316 l, Harts alloy B, Harts C alloy, titanium, tantalum, platinum – iridium, stainless steel coated with tungsten carbide

11. Lining material

  • (PTFE), Neoprene, (F46), Polyurethane rubber (wear)

12. Flow measurement range

  • The flow measurement range corresponds to the velocity range is 0.1 ~ 15 m/s

13. Conductivity range

  • Flow conductivity ≥5μs/cm, most of the ingredients is water, its conductivity within 200 ~ 800μs/cm, all can choose electromagnetic flow meter to measure the flow rate.

14. The output signal

a. Analog output

  • The bidirectional two road, all isolation 0 ~ 10 ma / 4 ~ 20 ma
  • Load resistance: 0 ~ 10 ma, 0 ~ 1.5 K Ω; 4 ~ 20 ma, 0 to 750Ω

b. Frequency output

  • Forward and reverse flow output, the maximum output frequency can be in 1 ~ 5000 hz inside. With photoelectric isolation bidirectional output transistor open collector. When external power is not more than 35 v, conducting collector current largest 50 ma.

c. Alarm output

  • Two way alarm output transistor open collector with photoelectric isolation. When external power is not more than 35 v, conducting collector maximum current of 250 ma.
  • alarm status: fluid atc, excitation of bolt, flow overrun.

d. Pulse output

  • Forward and reverse flow output, the output frequency limit of up to 5000 cp/S. Pulse equivalent to 0.0001 ~ 1.0 m3 / p. Pulse width is automatically set to 20 ms or square wave. With photoelectric isolation transistor open collector output. When external power is not more than 35 v, conducting collector current largest 50 mA.

15. Communication methods

  • RS232 or RS485 serial communication interface(Optional), HART communication protocol, FF field bus.

16. Power supply

  • 220 V AC, 50 HZ
  • 24 V DC
  • Batteries supply, with 2 ~ 5 section 19 AH battery, voltage is 3.6 V (battery replacement), the service life of more than five years. no 4 ~ 20 ma output, with RS485 communication or pulse output.

17. Straight pipe length

  • pipeline: general requirements: upstream ≥10D, downstream ≥5D;
  • Special cases can be done: upstream ≥5D, downstream ≥2D
    insertion type: upstream ≥15D , downstream ≥10D

18. Explosion proof: EXdIIBT4

19. Environment temperature: -25℃~+60℃

20. Relative humidity: 5%~95%RH

21. Total power consumption

  • Less than 15 W

22. Product standards

  • JB/T9248-1999 electromagnetic flow meter