Supply LDG electromagnetic flowmeter LDG-800 electromagnetic flowmeter direct sales

Description :

　　The main components of this product are: measuring tube, electrode, excitation coil, iron core, and magnetic yoke housing. Mainly used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. Such as water, sewage, mud, pulp, various acids, alkalis, salt solutions, food slurries, etc.

　　1、 Working principle

　　The working principle of electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. When a conductor moves in a magnetic field, an induced electromotive force is generated at both ends of the conductor perpendicular to the direction of the magnetic field and the direction of motion. The magnitude of electromotive force is directly proportional to the speed of conductor motion and the magnetic induction intensity of the magnetic field.

　　2、 Technical parameters

　　Nominal diameter (mm): Pipeline PTFE lining: DN10~DN600 Pipeline rubber lining: DN40~DN1200

　　Flow direction: positive, negative, net flow

　　Range ratio: 150:1

　　Repetitive error: ± 0.1% of the measured value

　　Accuracy level: Pipeline type: 0.5 level, 1.0 level

　　Temperature of the tested medium: ordinary rubber lining: -20 to+60 ℃

　　High temperature rubber lining: -20 to+90 ℃

　　PTFE lining: -30 to+100 ℃

　　High temperature PTFE lining: -20 to+180 ℃

　　Rated working pressure: (high pressure can be customized) DN6-DN80: ≤ 1.6MPa DN100-DN250: ≤ 1.0MPa

　　DN300－DN1200：≤0.6MPa

　　Conductivity range: The conductivity of the measured fluid is ≥ 5 μ s/cm

　　Current output, load resistance: 0-10mA: 0-1.5k Ω 4-20mA: 0-750k Ω

　　Digital frequency output: The upper limit of the output frequency can be set within 1-5000Hz with a transistor collector open circuit bidirectional output with photoelectric isolation.

　　Power supply: AC220V or DC24V

　　3、 Technical features

　　1. Suitable for liquid flow detection with conductivity greater than 5 μ s/cm. Changes in conductivity do not affect performance changes

　　2. Electromagnetic flow meters have long-term high measurement accuracy and are actually not affected by fluid physical properties

　　3. Easy to put into operation, the flowmeter is automatically set within the range of 0-10m/s, without the need to change the measurement range

　　4. All components in contact with the tested medium have good corrosion resistance and wear resistance, with a wide range of applications

　　5. There are no movable parts or flow blocking components in the pipeline, and there is almost no additional pressure loss during measurement

　　6. The measurement results are independent of physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity, etc

　　7. On site, the range can be modified online according to the actual needs of the user

　　8. High definition backlit LCD display, fully Chinese menu operation, easy to use, simple to operate, easy to learn and understand

　　9. All digital processing, strong anti-interference ability, reliable measurement, high accuracy, flow measurement range can reach 150:1

　　10. There are three integrators inside that can display the forward cumulative and reverse cumulative amounts, as well as the difference cumulative amount. There is also a non power down clock inside that can record the power down time

　　11. Capable of outputting communication signals such as 4-20mA, RS485, RS232, Hart, and Modbus

　　4、 Precautions

　　1. Determination of applicable traffic range. The selection of instrument diameter is determined based on the flow range. For electromagnetic flow meters, they are generally selected in situations where the flow signal is strong and the instrument can work stably for a long time. We suggest that you choose your instrument caliber based on the flow rate flow comparison table (see table below) and refer to the actual operating conditions. We recommend a flow rate range of 1-3m/s, which is beneficial for the instrument to be in a suitable state.

　　2. Selection of lining and electrodes. In addition to determining the diameter and flow range, electromagnetic flowmeters also need to choose relevant conditions such as sensor lining and matching electrodes to improve their economic applicability. The design unit can choose different linings, electrodes, etc. according to the different media of different users

　　3. Pressure and usage situation. In addition to determining the above conditions, the electromagnetic flowmeter should also improve the selection of operating pressure, installation form, shell protection level, explosion-proof requirements, output configuration, and other usage conditions and conditions. The integrated type is suitable for indoor environments with good performance, while the split type is suitable for situations where the sensor is used in harsh environments, with large pipeline vibrations and high temperature of the measured medium. Please choose according to the instrument model markings.

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