What should be paid attention to when using electromagnetic flow meter?

Abstract: What should be paid attention to when using electromagnetic flowmeter? The information is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. What should we pay attention to when using electromagnetic flowmeter? Huaian Wanfeng will make a brief explanation for everyone today. I hope everyone pays attention to the following points: 1. Routine maintenance It is only necessary to perform periodic visual inspection of the instrument, check the surrounding environment of the instrument, and clean it up. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is what should be paid attention to when using electromagnetic flowmeters? The article details. What should we pay attention to when using electromagnetic flowmeter? Today, Huaian Wanfeng will make a simple explanation for everyone. I hope everyone pays attention to the following points: 1. Daily maintenance only needs to perform periodic visual inspection of the instrument, check the surrounding environment of the instrument, remove dust, and ensure that water and other substances do not enter. Check Whether the wiring is good, check whether there is a new strong electromagnetic field device near the instrument or a new wire crossing the instrument. If the measuring medium is easy to contaminate the electrode or deposit or scale in the measuring tube wall, it should be cleaned and cleaned regularly. 2. Troubleshooting When the flowmeter is put into operation or it is found that the instrument is not working properly after a period of normal operation, you should first check the external conditions of the flowmeter, such as whether the power supply is good, whether the pipeline leaks or is not full, and whether there are air bubbles in the pipeline. , Whether the signal cable is damaged, and whether the output signal of the converter (ie, the input circuit of the rear instrument) is open. Remember to blindly overhaul the flowmeter. 3. Sensor inspection and testing equipment: 500MΩOne insulation resistance tester and one multimeter. Test steps: (1) When the pipeline is full of medium, use a multimeter to measure the resistance between terminals A, B and C, and the resistance between A-C and B-C should be as large as equal. If the difference is more than 1 times, it may be due to leakage of the electrode, condensation water adsorption on the outer wall of the measuring tube or in the junction box. (2) When the lining is dry, use MΩInsulation resistance between A-C and B-C measured by the meter (should be greater than 200MΩ). Then use a multimeter to measure the resistance between terminals A and B and the two electrodes in the measuring tube (should be in a short-circuit connected state). If the insulation resistance is small, it means that the electrode is leaking, and the whole set of flowmeter should be returned to the factory for maintenance. If the insulation has decreased but there is still 50MΩThe above and the inspection result of step (1) is normal, it may be that the outer wall of the measuring tube is damp, and a hot air blower can be used to dry the inside of the casing. (3) Use a multimeter to measure the resistance between X and Y, if it exceeds 200Ω, the excitation coil and its lead wires may be open circuit or poor contact. Remove the terminal board for inspection. (4) Check the insulation resistance between X, Y and C, it should be within 200MΩAbove, if there is a drop, use hot air to dry the inside of the casing. In actual operation, the decrease of coil insulation will lead to the increase of measurement error and the unstable output signal of the instrument. The performance of the electromagnetic flowmeter and the length of its life are inseparable from its daily maintenance and management, just like car maintenance. In the same way, under a good maintenance and management system, the electromagnetic flowmeter is very strong. The following will introduce to you what we do in the maintenance and management of the electromagnetic flowmeter. New types of flow meters are constantly emerging, with a wide variety of different performances, and their use conditions and technical parameters are also different. The price ratio and other issues have been carefully analyzed, compared and demonstrated, and it is believed that the electromagnetic flowmeter has the advantages of sensitive response, good linearity, high accuracy, and is not affected by the temperature, viscosity and other factors of the measured medium during the measurement process. 1. The electromagnetic flowmeter has high precision, good linearity and stable operation, which improves the accuracy of measurement and the reliability of data, and overcomes the problem of unreliable measurement data caused by unstable operation of some instruments. After many on-site comparisons, the errors are all within the control range, which enhances the confidence in the instrument, and ends the unscientific measurement method of calculating the water volume according to the performance curve of the pump. Human Factors. 2. The electromagnetic flowmeter has a simple structure, the sensor has no moving parts, and there is no measurement error or instrument failure caused by mechanical movement wear or impurity entanglement, so the failure rate is very low, and the maintenance amount is greatly reduced, thus saving a lot of manpower and material resources. 3. The electromagnetic flowmeter has a variety of interface circuits, which can be easily connected with the data acquisition terminal or computer to realize the automation of data acquisition, analysis and management. Management of electromagnetic flowmeter 1. Establish operation file of electromagnetic flowmeter, including flowmeter manufacturer, model, production date, installation location, pipe diameter, calibration time, etc., so as to facilitate the maintenance and management of the instrument. 2. Strengthen the inspection work and conduct regular testing and calibration. We mainly use two methods, one is to use a relatively high-precision portable flowmeter and electromagnetic flowmeter to measure and compare; the other is to use a flow meter calibrator to verify the flow converter and check the various Whether the technical indicators are correct, and the test data is archived. 3. Compare the test data with the previous test results, carefully analyze and study the suspicious data, find out the possible causes, deal with them in time, and make an analysis report on the operation of the flowmeter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'What should be paid attention to when using the electromagnetic flow meter?'
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