Electromagnetic flowmeter dn1200

Now there are more and more applications of dn1200 electromagnetic flowmeter. dn1200 electromagnetic flowmeter belongs to large-diameter electromagnetic flowmeter, which actually represents large-diameter electromagnetic flowmeter. Special attention should be paid to large-caliber electromagnetic flowmeters such as dn1200 during use. Because of the large diameter, the flanges that need to be equipped are also very large. Of course, plug-in electromagnetic flowmeters can also be used, but they can be used when they meet the conditions of full pipe. Flange type accuracy will be higher. Let me introduce to you the installation skills of dn1200 electromagnetic flowmeter and how to deal with some problems. In modern water resources engineering projects, there are some flow meters used by tap water supply units with extra-large diameters. These electromagnetic flow meters themselves are large in size and have large flanges. They have high technical requirements for installation, so certain skills must be mastered. , So that the flanges can be connected accurately and the electromagnetic flowmeter can work normally.　　 1. The welding angle of the matching flange must be perpendicular to the pipe, so as to ensure that the sensor part of the electromagnetic flowmeter is on the same line with the pipe axis. 2. When welding the matching flange, the flange and the flow meter should be connected and fixed, and the flow meter should be hoisted with a hoist and placed at the pipe installation place, then the flange and the pipe should be welded and positioned by spot welding, and then take it Lower the electromagnetic flowmeter and completely weld the flange firmly, then bolt the flowmeter firmly to the flange.　　3. Special reminder is that some users like to reserve the pipeline first due to the tight engineering time, and weld the mating flange first, and then the flowmeter will be immediately connected to the site to save the construction period. If the matching flange is not directly configured by the flowmeter manufacturer but purchased by yourself, you must pay attention to the specification and model of the flange when purchasing. The pressure range of the flowmeter is different, the thickness of the matching flange, and the spacing of the bolts will also be different. Users must pay attention to this problem, lest the flange is welded first and cannot be connected to the flowmeter. The above are the precautions for the installation of large-caliber electromagnetic flowmeters. The following are the problems and treatment methods of large-caliber electromagnetic flowmeters such as dn1200 in use: 　　Problem: During the measurement process, the flow often fluctuates, and sometimes it will appear. Negative number, 　　 treatment process: It is initially judged to be on-site interference. After the flowmeter is grounded, there is still no obvious improvement. Through inquiries about the medium, it is learned that it is wastewater after printing and dyeing. The medium has a certain adhesion. Let the customer flush the pipeline first. But there is still no significant improvement. Use a multimeter to test the sensor, test the excitation coil, the resistance value jumps, test the signal line voltage, the voltage is within the normal range, it is preliminarily judged that the sensor itself has a problem. After replacing the sensor, there is still no obvious effect. Arrange the technology to go to the field test, use a shake meter to supply power to the sensor's measuring motor, increase the voltage so that the protective film on the sensor's measuring electrode is broken down, the flow rate tends to stabilize, and it is judged that a protective film is formed on the tantalum electrode. After a two-week application test, the problem reappeared. After discussion, it was determined that the measurement medium covered the electrode and the flow rate could not be used normally. When the tantalum electrode measures ordinary water, an oxide film will appear, but this possibility is treated with acidic substances. , Basically will not reappear. Based on the above judgments, the site is the adhesive substance of printing and dyeing wastewater, which covers the electrodes, which causes the electromagnetic flowmeter to not be used normally. It is recommended to use the ultrasonic flowmeter.　　 Kaidi Shengong introduces you here today, and next time I will share with you more dn1200 electromagnetic flowmeter experience. If you have any questions about dn1200 electromagnetic flowmeter, you can ask Kaidi Sensing Technology Co., Ltd. Shengong for answers.

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