Phone:
+8619157815720
Views: 24 Author: Site Editor Publish Time: 2021-11-26 Origin: Site
electromagnetic type flow meter is an ideal product specially designed for water wells, pumping stations, drinking water, sewage and wastewater industries. We can choose the appropriate electromagnetic flowmeter from the following points:
Conductivity: Magmeters require the liquid to have a minimum conductivity (typically >5 µS/cm). Verify the conductivity of the liquid.
Chemical Compatibility: Ensure the magmeter materials (liner and electrodes) are compatible with the liquid’s chemical properties (e.g., pH, corrosiveness).
Temperature and Pressure: Confirm the magmeter can operate within the liquid’s temperature and pressure ranges.
Medium: electromagnetic type flow meter is only suitable for measuring conductive medium, so knowing the conductivity of medium in pipeline is an important factor. In addition, the temperature, corrosivity and pipeline pressure of the measured medium are also important factors that you need to consider.
Liner Material: Choose a liner material that is resistant to the liquid’s chemical and abrasive properties. Common options include:
PTFE: For highly corrosive liquids.
Rubber (e.g., EPDM, Neoprene): For less aggressive liquids and slurries.
PFA: For a balance of chemical resistance and mechanical strength.
Electrode Material: Select electrodes that resist corrosion and fouling. Common options include:
Stainless Steel (316L): For general-purpose applications.
Hastelloy: For highly corrosive liquids.
Titanium: For chlorides and oxidizing acids.
Tantalum: For strong acids like hydrochloric and sulfuric acid.
Accuracy: Choose a electromagnetic type flow meter with an accuracy level suitable for your application (typically ±0.5% to ±0.2% of the measured value).
Output Signal: Ensure the magmeter provides the required output signal (e.g., 4–20mA, pulse, or digital communication protocols like Modbus or HART).
Power Supply: Verify the magmeter’s power requirements (e.g., 24V DC, 220V AC) and ensure compatibility with your system.
Pipe Orientation: Magmeters can be installed horizontally, vertically, or inclined, but ensure the orientation aligns with the manufacturer’s recommendations.
Straight Pipe Runs: Ensure sufficient straight pipe runs upstream (typically 10D) and downstream (typically 5D) of the magmeter to avoid flow disturbances.
Grounding: Proper grounding is essential for accurate measurements. Use grounding rings or electrodes if the pipeline is non-conductive (e.g., plastic).
Upstream and downstream pipelines: If the electromagnetic flowmeter is installed too close to the pump, valve elbow and other obstacles, its performance will be affected by unstable or irregular flow.
Cost: The cost of magnetic flow transmitter is related to raw materials, such as copper coil, electrode, liner etc. The higher the quality of raw materials, the higher the cost. In addition, the cost of the magnetic flow sensor is also related to the accuracy. The higher the accuracy, the higher the cost.
By carefully considering the liquid properties, material compatibility, installation requirements, and environmental conditions, you can select a electromagnetic type flow meter that provides accurate, reliable, and long-lasting performance for measuring conductive liquids. Always consult with the manufacturer or supplier to ensure the chosen magmeter meets your specific application needs.
About ARTang
ARTang is a global leader in measurement instrumentation, services and solutions for industrial process engineering that energizes the transformation of society and industry to achieve a more productive, sustainable future. We provide process solutions for flow, level, pressure, analytics and digital communications, optimizing processes in terms of economic efficiency, safety & environmental impact.