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『Installation method of electromagnetic flowmeter』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
1. Precautions for installation of electromagnetic flowmeter
The installation of electromagnetic flowmeter should pay special attention to the following matters to ensure measurement accuracy and stable operation of the equipment
1. Choose vertical installation position (recommended): prioritize vertical installation and ensure that the measured fluid flows from bottom to top. This installation method can effectively avoid the accumulation of bubbles or sediment in the fluid and reduce measurement errors. Horizontal installation: If horizontal installation is required, the following conditions must be met: electrode horizontal alignment: the two electrodes must be located on the same horizontal plane to prevent signal abnormalities caused by uneven fluid distribution. Ensure full tube status: Whenever measuring, the catheter must be filled with liquid to avoid measurement failure due to empty or half tube status
2. Grounding and anti-interference measures Signal characteristics: The output signal of the electromagnetic flowmeter is weak (only a few millivolts at full range and only a few microvolts at low flow), making it highly susceptible to external interference. Grounding requirements: Separate grounding point: The casing, shielding wire, and measuring conduit of the flowmeter need to be grounded separately to avoid sharing the grounding point with other equipment (such as motors and pipelines). Do not connect strong interference sources: Do not connect the grounding point to strong magnetic equipment such as motors, transformers, or upper and lower pipelines to prevent interference signals from entering
3. Stay away from magnetic sources. Interference magnetic source type: The installati
4. Requirements for streamline distribution in straight pipe sections. Influence: Electromagnetic flow meters measure based on velocity method. If the streamline distribution does not meet the set conditions (such as vortex or turbulence), measurement errors will occur. Length of straight pipe section: Front straight pipe section: It is necessary to ensure a straight pipe section 5-10 times the diameter of the pipeline to eliminate the influence of local resistance such as valves, bending balance rollers, and diameter reduction on the symmetry of the streamline. Rear straight pipe section: Generally requires 3-5 times the diameter of the pipeline to ensure fluid stability before entering the measurement section. Special scenario: If the on-site space is limited, a rectifier can be installed to replace some of the straight pipe sections, but the rectification effect needs to be verified.
5. Other precautions to avoid vibration and high temperature: The installation location should be far away from vibration sources (such as pumps and compressors) and high temperature environments (such as steam pipelines) to prevent equipment damage or signal fluctuations. Regular inspection and maintenance: After installation, it is