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Split electromagnetic flowmeter

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1. Installation precautions for split electromagnetic flowmeter

Installation precautions for split electromagnetic flowmeter: When installing a split electromagnetic flowmeter, the following points should be noted to ensure its accurate and stable operation:

1. Sensor installation direction: The sensor of the split electromagnetic flowmeter should be installed vertically to ensure that the fluid flows from bottom to top. This installation method helps to keep the solid and liquid in a mixed state, avoiding measurement errors caused by the precipitation of solid substances (such as sediment, small stone particles, etc.) in the medium.

Secondly, to prevent interference from foreign objects, a metal filter should be installed at the upstream inlet of the flowmeter to block fish, weeds, and other foreign objects that may enter the measuring tube.

. The movement or oscillation of these debris in the pipeline can cause instability in the output of the flowmeter.

3. Prevention of negative pressure: Install a negative pressure prevention valve near the split type electromagnetic flowmeter to prevent negative pressure from being generated inside the sensor.

. When the valves upstream and downstream of the flowmeter are closed simultaneously and the fluid temperature is higher than the air temperature, the contraction of the fluid after cooling may form negative pressure, causing the lining to peel off from the metal conduit and causing electrode leakage. Back pressure or use of downstream valves: When a vertical pipeline is connected downstream of a split type electromagnetic flowmeter, if the upstream valve of the flow sensor is used to close or adjust the flow rate, negative pressure will be
Split electromagnetic flowmeter
formed inside the sensor measuring tube. To prevent negative pressure, it is necessary to add back pressure or use downstream valves to regulate and close the flow rate. 4. Adequate space for maintenance: For the convenience of pipeline installation, wiring, inspection, and maintenance, it is necessary to leave appropriate space for the split type electromagnetic flowmeter. Especially for the large caliber flow meters of Huilan Bridge, which are often installed in instrument wells, sufficient space should be ensured for operation. Installation height: The instrument installation should be at a certain height from the ground for easy cleaning, installation, and subsequent observation, wiring, and maintenance. In summary, when installing a split type electromagnetic flowmeter, special attention should be paid to the installation direction of the sensor, prevention of debris interference, prevention of negative pressure generation, and ensuring sufficient maintenance space. These measures will help ensure the accurate and stable operation of the flowmeter, thereby improving measurement accuracy and reliability.

2. What is a split type electromagnetic flowmeter and what operating conditions is it mainly used for? The structure of an electromagnetic flowmeter mainly consists of a magnetic circuit system, a measuring conduit, electrodes, a housing, a lining, and a converter. Magnetic circuit system: Its function is to generate a uniform DC or AC magnetic field. The DC magnetic circuit is implemented using permanent magnets, which has the advantages of a relatively simple structure and less interference from AC magnetic fields. However, it is prone to polarize the electrolyte liquid inside the measuring tube, causing t

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