High precision LDG electromagnetic flowmeter LDG-125 anti-corrosion electromagnetic flowmeter

Description :

　　This product is widely used for flow measurement of conductive liquids in industries such as tap water, chemical, coal, environmental protection, textile, metallurgy, and papermaking. Our company mainly produces two types of electromagnetic flow meters: integrated intelligent type and split intelligent type.

　　1、 Installation:

　　1. Horizontal and vertical installation

　　Sensors can be installed horizontally and vertically, but it should be ensured to avoid the influence of sediment and bubbles on the measuring electrode, and the electrode axis should be kept horizontal. When installed vertically, the fluid should flow from bottom to top. Sensors cannot be installed at high positions in pipelines, as this location is prone to the accumulation of air bubbles.

　　2. Ensure full pipe installation

　　Ensure that the flow sensor is filled with the measured fluid in the pipeline during measurement and that there is no non full pipe state. If the pipeline is not full or the outlet is empty, the sensor should be installed on a siphon tube.

　　3. Installation between bends, valves, and pumps

　　To ensure the stability of the measurement, a straight pipe section should be installed in front and behind the sensor, with its length given in the following figure. If it cannot be achieved, a current stabilizer should be used or the cross-sectional area of the measurement point should be reduced.

　　4. Sensors cannot be installed at the inlet of the pump

　　To avoid negative pressure, the sensor should not be installed at the inlet of the pump, but at the outlet of the pump.

　　5. Inlet and outlet straight pipe sections of the sensor

　　An ideal installation location should be chosen with sufficient straight pipe sections before and after the measurement point. The inlet straight pipe section should be ≥ 5D, and the outlet straight pipe section should be ≥ 3D (D is the nominal diameter of the sensor). The inserted inlet straight pipe section should be ≥ 20D, and the outlet straight pipe section should be ≥ 7D (D is the nominal diameter of the sensor).

　　2、 Characteristics:

　　1. Electromagnetic flowmeter is an instrument for measuring volumetric flow rate. The measurement of flow rate is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity. The sensor induced voltage signal is linearly related to the average flow rate, and the measurement accuracy is high.

　　2. There is no obstruction or moving parts inside the measuring tube, which will not cause additional energy loss or blockage. Therefore, the energy-saving effect is significant, especially suitable for measuring liquid-solid two-phase flows such as sewage, mud, slurry, coal water slurry, pulp, etc.

　　3. Electromagnetic flowmeter has no mechanical inertia, sensitive response, can measure instantaneous pulsating flow, and has good linearity.

　　4. The installation requirements are low, and the straight pipe section required for the sensor is relatively short, usually in the first 5D and then 3D (D is the inner diameter of the selected instrument).

　　5. The sensor part only has the lining and electrodes in contact with the medium. As long as the electrode and lining materials are selected reasonably, they can be corrosion-resistant and wear-resistant, ensuring long-term use.

　　6. When power is off, EEPROM can protect set parameters and accumulated values.

　　3、 Technical parameters:

　　Nominal diameter (mm) (special specifications can be customized)

　　Pipeline type PTFE lining: DN10~DN600

　　Pipeline rubber lining: DN40~DN2200

　　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) DN10- DN150: ≤ 1.6MPa; DN200－DN350：≤1.0MPa

　　DN400－DN1000：≤0.6MPa； DN450－DN2200：≤0.25MPa

　　Flow velocity range: 0.1-15m/s

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

　　Signal output: 4-20mA (load resistance 0-750 Ω), pulse/frequency, control level

　　Communication output: RS485, MODBUS protocol, HART protocol

　　Power supply: AC220V or DC24V

　　Requirement for straight pipe length: upstream ≥ 5DN, downstream ≥ 2DN

AfterSalesService :

• High precision LDG electromagnetic flowmeter