Intelligent integrated electromagnetic flowmeter

The intelligent integrated electromagnetic flowmeter is often used in the industrial field, and it is an indispensable and important instrument for the flow measurement of conductive water such as sewage/waste water. So in what occasions is the intelligent integrated electromagnetic flowmeter used? Let's talk about the application occasions of the intelligent integrated electromagnetic flowmeter and the precautions for use and installation.　　1. Applications of intelligent integrated electromagnetic flowmeter　　(1) The ambient temperature or the radiation temperature on the surface of the flowmeter converter exceeds 60℃.　　(2) Where the pipe is vibrated greatly.　　(3) Severely corroded the aluminum shell of the sensor.　　 (4) The site with high humidity or corrosive gas. (5) The flowmeter is installed at high altitude or where it is inconvenient to debug underground. 2. Points to note when installing the intelligent integrated electromagnetic flowmeter: 　　The sensor of the intelligent integrated electromagnetic flowmeter should be installed vertically, and the fluid should flow from bottom to top to meet the requirements of solid and liquid The two are in a mixed state. The reason is that the solid matter (sand, pebble particles, etc.) in the medium is prone to precipitation. In addition, if there are fish and weeds in the pipeline, the movement of fish in the pipeline will cause the output of the flowmeter to swing back and forth; the back and forth swing of the weeds hanging near the electrode will also cause the output of the flowmeter to be unstable. A metal filter is installed at the upstream inlet of the flowmeter to block fish and weeds from entering the measuring tube.　　Intelligent integrated electromagnetic flowmeter prevents the improper operation of the negative pressure pipeline setting and operation will cause negative pressure in the sensor. When the upstream and downstream valves of the flowmeter are closed at the same time, if the temperature of the fluid is higher than the air temperature, it will shrink after cooling, so that the pressure in the pipe will be in danger of forming a negative pressure. The negative pressure causes the lining to peel off from the metal conduit, causing electrode leakage.　　 The pipeline is equipped with a negative pressure prevention valve near the split electromagnetic flowmeter, and the valve is opened to connect to the atmospheric pressure to prevent negative pressure from being generated in the sensor. When a vertical pipeline is connected downstream of the split electromagnetic flowmeter, if the upstream valve of the flow sensor is used to close or adjust the flow, a negative pressure will be formed in the measuring pipe of the sensor. In order to prevent negative pressure, it is necessary to add back pressure or use a downstream valve to adjust and close the flow.　　The intelligent integrated electromagnetic flowmeter has a proper maintenance space. Large-caliber flowmeters are often installed in the meter well. For the convenience of pipeline installation, wiring, inspection and maintenance, proper space needs to be reserved. For the convenience of observation, wiring and maintenance, the instrument should be installed at a certain height from the ground to facilitate cleaning and installation. 3. Troubleshooting during the use of the intelligent integrated electromagnetic flowmeter. The split magnetic flowmeter will cause inaccurate measurement due to various faults during operation. Generally, the faults caused by the electromagnetic flowmeter during operation can be roughly divided into Two types. One is the failure of the flowmeter itself and the failures caused by the damage of the components; the other is the failures caused by the change of external conditions, such as unstable output, countless flow, excessive error, etc. Here are a few simple troubleshooting methods: 　　 (1) Unstable output: 　　 1. Flow field is unstable; 　　 2. The liquid passing through the sensor contains gas and large solid blocks; 　　 3. Electrical connection is virtual; 　　 4. Poor grounding; 5. Electrode leakage solution: 　　1 modify the pipeline, or add a fake sensor; 　　2. Normal phenomenon; 　　3. Check the wiring, connect the wire; 　　 4. Connect the ground wire; 　　 5. Repair the sensor (2) No output when the liquid flows ：　　1. The two core wires of the signal transmission cable between the converter and the converter are connected reversely; 　　2. The power supply is not connected or the contact is poor; 　　3. There is leakage in the pipe, shell and end surface of the sensor.　　Solution: 　　1. Reverse the thread end; 　　2. Connect the power supply and maintain good contact; 　　3. Repair the sensor.　　(3) Liquid does not flow, there is an output　　 1. The signal transmission cable connection with the converter is open; 　　 2. The signal cable to the electrode connection is open; 　　 3. The electrode surface is contaminated or deposited with an insulating layer; 　　 4. Poor grounding or open circuit.　　 Solution: 　　 1. Connect the cable; 　 　 2. Open the sensor and reconnect it; 　 　 3. Wipe the electrode surface; 　 　 4. Connect the ground wire.　　(4) Excessive error: 　　1. The zero point is too high; 　　2. Not completely filled with liquid; 　　3. The power supply has too much distortion 　　 4. Poor grounding.　　Solution: 　　1 re-adjust the zero point; 　　2. Improve the pipeline conditions, the sensor is always full of liquid; 　　3. Improve the power supply conditions to meet the normal working conditions; 　　4. Connect the ground wire.　　 The above is the application selection of the intelligent integrated electromagnetic flowmeter and the precautions for installation and use. I believe that friends have seen that now they have a basic understanding of the intelligent integrated electromagnetic flowmeter. In addition to choosing the right instrument for measurement, the industrial site should pay more attention to the maintenance of the intelligent integrated electromagnetic flowmeter! For more questions about the intelligent integrated electromagnetic flowmeter, please consult the Kaidi selection engineer. Kaidi focuses on the production of intelligent integrated electromagnetic flowmeters. There are 20 in the country. Many offices provide after-sales service and are a trusted manufacturer of intelligent integrated electromagnetic flowmeters.
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