Remote transmission LDG electromagnetic flowmeter LDG-350 sewage electromagnetic flowmeter

Description :

　　This product uses rubber lining as the inner lining. Good wear resistance, excellent elasticity, high tensile strength, working temperature less than 80 ℃, suitable for measuring general water, sewage, mud, and slurry, and resistant to corrosion from low concentration acid-base media.

　　1、 Characteristics:

　　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, resulting in high measurement accuracy (0.3-0.5%).

　　There is no obstruction in the measuring pipeline, so there is no additional pressure loss, which has significant energy-saving significance.

　　There are no movable parts inside the measuring pipeline, so the sensor has a long lifespan.

　　The straight pipe section required for the sensor is relatively short, making it easy to install.

　　Reasonable selection of electrode and lining materials can resist corrosion and wear.

　　2、 Structure:

　　a、 Measurement catheter: composed of stainless steel catheter, lining, and connecting flange, it is a carrier for measuring the on-site working conditions of the measured liquid.

　　b、 Measurement electrode: a pair of electrodes installed on the inner wall of the measurement catheter, perpendicular to the axial flow direction, to generate signals for the measured liquid.

　　c、 Excitation coil: The upper and lower excitation coils that generate a magnetic field inside the measuring conduit.

　　d、 Iron core and magnetic yoke: Introduce the magnetic field generated by the excitation coil into the liquid and form a magnetic circuit.

　　e、 Shell: Instrument outer packaging.

　　2. Converter:

　　Is it an intelligent secondary meter that amplifies and processes traffic signals?? After calculation by the microcontroller, it can display flow rate, cumulative measurement, and output signals such as pulses and analog currents for measuring or controlling fluid flow rate.

　　3. Product assembly form:

　　It is divided into two forms: one-piece and split type.

　　a、 Integrated: The sensor and converter are installed together.

　　b、 Split type: Sensors and converters are installed separately, forming a flow metering system through connecting cables.

　　c、 To meet the requirements of measuring different media, there are multiple choices for the lining and electrode materials of sensors.

　　3、 Technical parameters:

　　Instrument accuracy: pipeline type 0.5 level, 1.0 level; Insertion type 2.5 level

　　Measurement medium: various liquid and liquid-solid two-phase fluids with conductivity greater than 5 μ S/cm.

　　Flow velocity range: 0.2-8m/s

　　Work pressure: 1.6MPa

　　Environmental temperature: -40 ℃ to+50 ℃

　　Medium temperature: PTFE lining ≤ 180 ℃

　　Rubber material lining ≤ 65 ℃

　　Explosion proof mark: Exmibd Ⅱ BT4

　　Explosion proof certificate number: GYB01349

　　External magnetic interference: ≤ 400A/m

　　Shell protection: integrated type: IP65;

　　Detached type: Sensor IP68 (5 meters underwater, limited to rubber lining)

　　Converter IP65

　　Output signal: 4-20mA.DC, load resistance 0-750 Ω

　　Communication output: RS485 or CAN bus

　　Electrical connection: M20 × 1.5 internal thread, φ 10 cable hole

　　Power supply voltage: 90-220V.AC, 24 ± 10% V.DC

　　4、 Installation:

　　1. The sensor structure of an electromagnetic flowmeter is simple, with no movable parts inside the measuring tube and no throttling components that hinder fluid flow.

　　2. It can measure the flow rate of contaminated media, corrosive media, and suspended liquid-solid two-phase flow. This is because there are no obstructing flow components inside the instrument measuring tube, and only the inner lining and electrodes of the measuring tube are in contact with the measured fluid. The material can be selected according to the properties of the measured fluid.

　　3. Electromagnetic flowmeter is a volumetric flow measurement instrument that is not affected by the temperature, viscosity, density, or conductivity (within a certain range) of the measured medium during the measurement process. Therefore, after being calibrated with water, electromagnetic flow meters can be used to measure the flow rate of other conductive liquids.

　　4. The output of an electromagnetic flowmeter is only proportional to the average flow velocity of the measured medium, and is independent of the flow state under symmetric distribution (laminar or turbulent). So the range of electromagnetic flow meters is extremely wide, with a measurement range of up to 100:1, and some even have an operational flow range of up to 1000:1.

　　5. Electromagnetic flowmeter has no mechanical inertia, sensitive response, can measure instantaneous pulsating flow, and can also measure flow in both positive and negative directions.

AfterSalesService :

• Remote transmission LDG electromagnetic flowmeter