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Electromagnetic Flowmeter Introduction:

    It based on the principle of electromagnetic flowmeter Faraday's law. When a conductor when the magnetic field inside the movement, in the direction of the magnetic field, the direction of movement of the conductor ends of mutually perpendicular directions, will be induced electromotive force. Magnetic induction electromotive force is proportional to the size of the conductor velocity and magnetic field.

    Hahn fluid research and development production HNEF-2000 series of new intelligent electromagnetic flowmeter, based on the basic products, combined with the latest advanced technology, products can basically meet the various petrochemical complex conditions, iron and steel metallurgy, water supply and drainage, water conservancy irrigation, municipal water supply, environmental protection, monitoring and control of sewage, paper, pharmaceutical, food and other flow measurement and control processes in industrial and agricultural production.

HNEF-2000 intelligent electromagnetic flowmeter

1 Features
- Electromagnetic flowmeter has the following features:
- Is not affected by fluid density, viscosity, temperature, pressure, and rate of change of the power, the linear measurement principle to achieve high accuracy measurements;
- Measuring tube unimpeded flow of parts, small pressure loss, straight pipe requirements low;
- Nominal diameter DN6-DN3000 cover a wide range of liner and electrode have a wide selection to meet a variety of conductive fluid measurement requirements;
- Converter with programmable low-frequency square wave excitation frequency and improve the stability of the flow measurement, low power consumption;
- Converter 16-bit embedded microprocessors, digital processing, computing speed, anti-interference ability, reliable measurement, high accuracy flow measurement range of up to 1500: 1;
- High-resolution backlit LCD display, full Chinese menu operation, easy to use, simple, easy to understand;
- Having RS485 or RS232O digital communication signal output;
- Having conductivity measurements, the sensor can determine whether air traffic control, with self-test and self-diagnostic function;
- Using SMD devices and surface mount (SMT) technology, circuit reliability;
- It can be used for the respective hazardous areas.

2 The main purpose
    Electromagnetic flow meter, used to measure the volume flow in closed conduits of conductive fluid. Widely used in industrial and agricultural production process flow measurement and control petrochemical, iron and steel metallurgy, water supply and drainage, irrigation, water treatment, environmental monitoring and control of sewage, paper, medicine, food and so on.

3 Environmental Conditions
    Ambient temperature: sensor -25 ℃ ~ + 60 ℃ converter -10 ℃ ~ + 60 ℃
    Relative humidity: 5% -95%

4 Operating Conditions
    Fluid Maximum temperature:
    Compact: 70 ℃
    Separate: teflon-lined 150 ℃
    Neoprene lining 80 ℃
    120 ℃ high temperature rubber
    Polyurethane Lining 70 ℃

5 fluid conductivity: ≥5μS / cra

6 product technical performance indicators

6.1 Implementation of standards: JB / T9248-1999

6.2 maximum flow rate: 15m / s

6.3 Nominal Diameter (mm): DN3,6,10,15,20,25,32,40,50,65,80,100,150,200,250,300,350,400,450,500,600, 700,800,900,1000,1200,1400,1600,1800,2000,2200,2400,2600,2800,3000

6.4 Accuracy: 0.5%, 0.2%

6.5 Nominal pressure:
    4.0MPA (DN10-150)
    1.6MPA (DN200-600)
    1.0MPA (DN700-1200)
    0.6MPA (DN1400-3000)
    Other specifications and standards according to user requirements.

6.6 Material:
     Electrode forms and materials
     Electrode form and can be divided into standard, spatula-shaped, removable type, with a ground electrode.
     Electrode and the ground electrode material stainless steel containing molybdenum, 7 Hastelloy B, Hastelloy C, titanium, tantalum, platinum alloy by a stainless steel coated with tungsten carbide.
     Flange material: carbon steel
     Grounding Ring Material: Stainless Steel
     Door guard ring material: stainless steel, carbon steel.

6.7 Housing protection:
     IP65:
     IP68: only Separate neoprene and polyurethane lining sensor, and it does not include explosion-proof structure.

6.8 Explosion-proof Standard:
    DN15-DN600 integrated explosion: md II BT4
    DN15-DN1600-proof separation, sensor and transducer mounted on the respective danger zone md II BT4
    DN15-DN1600 separation-proof, the sensor is installed in the corresponding danger zone converter installed in the safe zone: md II BT4

6.9 connection cable: separation between electromagnetic flowmeters, sensors and signal converter cables, cable lengths should be less than 100MM, the company provides 10M cable with free table, and the gap to be ordered.

7 Converter Performance:

Power supply: single-phase AC 85-265V, 45-63HZ, power is less than 20W; DC power supply 11-40VD · C

Converters Display and programming operation: four membrane keys can be set to select all parameters, you can use wide receiver communicator or PC (RS485, RS232) converter set for programming, high-resolution backlit LCD display, empty pipe detection , self-diagnostic function.

Digital Communications: RS485, RS232, MODBUS, REMOTE, with lightning protection.

output signal:
- Current output: two-way two-way, fully isolated 0-10mA / 4-20 mA; load resistance: 0-10 mA is 0-1.5K ohm, 4-20mA time is 0-750 ohms.
- Frequency output: forward and reverse flow output, the upper limit of the output frequency can be set within the range of 1-5000 HZ. With optical transistor from humble collector bidirectional outputs. External power supply is not more than 35V, maximum collector current is turned on to 250 mA.
- Pulse output: forward and reverse flow output, up to the upper limit of the output pulse 5000cp / s. Pulse equivalent to 0.001L-1.0m3 / cP. Pulse width is automatically set to 20ms or square wave. With optical isolation transistor open collector output. External power supply is not more than 35V, maximum collector current conduction is mA.
- Flow indication output: The meter can measure the flow of fluid flow positive and negative directions. And can determine the direction of fluid flow. When the predetermined display output + 10V high forward flow and reverse fluid flow output 0V low level.
- Alarm output: transistor with two optically isolated open collector alarm output. External power supply is not more than 35V, maximum collector current conduction is 250mA. Alarm state: fluid air traffic control, excitation break, traffic violations.

Damping time: between 0-100S binning options.

If unknown: please contact customer service