Sharing of Practical Experiences on Intelligent Electromagnetic Flow Meter
1. Electromagnetic flowmeter is a volumetric liquid flowmeter that ensures that the liquid in the flowmeter is filled with pipes. In order to maintain the flow rate stability, the flowmeter should have straight tubes greater than 5D and 2D. The choice of the diameter of the flowmeter should ensure the measurement accuracy within the minimum and maximum flow range.
2. When it is necessary to install vertical tubes from top to bottom, the flowmeter should be installed at the bottom of the pipe, and the throttle valve should be installed downstream of the flowmeter to generate back pressure.
3. Do not install the flowmeter at the lowest point of the tilt tube when measuring easily deposited slag. Install clean valve or blind plate at the bottom of pipe, clean inner wall accessories regularly.
4. Sensors and converters shall be installed in the position of violent vibration respectively. Both ends of the DN 350 caliber flowmeter should be provided with support or suspension.
5. Ground rings must be used on lined plastic pipes or pipes. If the grounding ring and the measuring electrode are made of different materials, the electrode will be damaged due to electrochemical corrosion. If the electrode material is not selected correctly, the measured medium will polarize the electrode and weaken the signal potential. Therefore, attention should also be paid to the selection of electrode materials. See specifications and discuss with manufacturers.
6. Certain conditions require the injection of chemical drugs into the pipeline, which will result in uneven liquid conductivity and interfere with the electromagnetic flowmeter output signal. For this purpose, the injection point can be used downstream of the flowmeter. If required to be injected upstream, the injection point should be kept at a distance from the flowmeter so that the liquid can be evenly mixed.