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An electromagnetic flow meter is conducive to improving the accuracy of water measurement. It is an ideal type of measuring instrument, which meets the needs of industrial water measurement in steel mills and reflects the practical advantages of an electromagnetic flow meter. In this article, the electromagnetic flow meter is studied and its application in steel mill industrial water measurement is analyzed.
Electromagnetic flow meters can eliminate the influence of steel mill dust, high temperature, and other factors, ensure the accuracy of industrial water measurement, create a reliable measurement environment, and give full play to the application advantages of electromagnetic flow meters. It is very difficult to measure industrial water in steel mills. It is necessary to reasonably control the use of electromagnetic flow meters in order to optimize the process of water measurement and promote the measurement results to reach the best state.
The practicability of industrial water measurement in steel mills is strong, and the electromagnetic flow meter instrument conforms to the measurement standards of industrial water in steel mills and is actively involved in the process of water measurement. The principle of an electromagnetic flow meter is electromagnetic induction, and the object of measurement is conductive liquid. When the industrial water in the steel factory flows in the pipeline, the electromagnetic flow meter installed sideways will detect the cutting state of the industrial water on the magnetic force line through the sensor. At this time, the industrial Water will generate an induced potential, forming a certain potential difference, and the electromagnetic flow meter uses the potential difference to analyze the actual situation of the industrial water in the pipeline, and calculate the flow rate of the industrial water in the steel plant according to the formula of electromagnetic flow, so as to give full play to the measurement advantages of the electromagnetic flow meter.
To analyze the application of electromagnetic flow meters in the industrial water metering of steel mills, the analysis is mainly carried out in two aspects of installation and operation, as follows:
In the industrial water metering of steel mills, the installation position of the electromagnetic flow meter is not fixed, but the installation position is designed by itself according to the actual needs of water metering in steel mills. The sensor in the electromagnetic flow meter should be installed in conjunction with the flow meter to ensure that the electrodes of the two are at the same horizontal position. Because the measurement environment of industrial water metering in steel mills is complex, the installation position of the sensor in the electromagnetic flow meter must be able to be filled with the liquid to be measured, so as not to affect the effect of the sensor. For example, a steel factory is installing an electromagnetic flow meter, the sensor is selected on the side of the low-level inclined pipeline, and the sensor on some vertical pipelines is selected on the side of the liquid flow pipeline from bottom to top so that the sensor can accurately transmit the information to the electromagnetic flow Inside the meter, the steel mill keeps the electromagnetic flow meter away from places with strong vibrations to eliminate interference from vibration factors.
The operation of the electromagnetic flow meter in the industrial water measurement of the steel plant requires that the measured liquid conducts electricity, and the conductivity of the liquid is greater than the threshold value, thereby ensuring the measurement accuracy of the electromagnetic flow meter and eliminating the error of water measurement. The electrical conductivity of industrial water in steel mills is >10-4S/cm. The range of electrical conductivity of chemical molecules dissolved in the liquid is 10-4S/cm-10-1S/cm. Electromagnetic flow meters can be used. For example, the flow rate of industrial water in a steel factory is 4m/s-5m/s, and the electromagnetic flow meter adopts the full-scale measurement method. When measuring industrial water, the flow rate of the electromagnetic flow meter is not limited, but it needs to be based on the industrial water of the steel factory.
In some cases, it is recommended to use a flow rate of less than 6m/s. When the conductivity of the industrial water in the steel plant changes and is close to the minimum, it is necessary to control the flow rate of the industrial water at this time, reduce the flow rate of the industrial water as much as possible, and promote the electromagnetic flow meter to complete the industrial water measurement at a low speed, and can also eliminate the flow rate. The interference of noise on the electromagnetic flow meter reflects the reliability of the electromagnetic flow meter.
The application of electromagnetic flow meters in industrial water metering in steel mills is in a complex environment. In order to ensure the accuracy and stability of electromagnetic flow meters, it is necessary to pay attention to the control of cables in order to relieve the operating pressure of electromagnetic flow meters. The cable length has a great influence on the electromagnetic flow meter, and some suggestions are put forward for the design of the cable length in the operation of the electromagnetic flow meter.
(1) The length of the cable connecting the converter should not be too long, try to adopt a straight line connection, the shorter the cable, the better the transmission signal of the electromagnetic flow meter.
(2) If the cable used by the electromagnetic flow meter in the industrial water measurement of the steel mill exceeds the standard length, there is a great possibility that it will cause a load. In order to prevent the occurrence of the load, a shielded cable should be selected to avoid the cable from causing the electromagnetic flow meter. The voltage of the electromagnetic flow meter is increased by shielding means to control the potential of the electromagnetic flow meter, thereby optimizing its application in industrial water metering in steel mills.
(3) In the industrial water metering of steel mills, the signal cable of the electromagnetic flow meter can be adjusted, and it has flexible characteristics in terms of length.
In the project of industrial water metering in steel mills, maintenance work should be arranged reasonably according to the operating status of the electromagnetic flow meter.
The sensor in the electromagnetic flow meter is in frequent contact with the industrial water fluid in the steel mill. If the industrial water contains pollutants, it will contaminate the inner wall of the sensor. Therefore, in the process of maintaining the electromagnetic flow meter, the sensor must be cleaned and the sensor’s condition must be checked at the same time. Electrode loop to avoid an open circuit in the sensor. There is a direct relationship between the sensor and the electromagnetic flow meter. Strengthening the maintenance of the sensor can ensure the accuracy of the electromagnetic flow meter and eliminate the interference of measurement errors.
The pulse generated by the lightning strike has a great impact on the electromagnetic flow meter, inducing a surge current and destroying the electromagnetic flow meter. When steel mills use electromagnetic flow meters, they need to do lightning strike prevention work in advance to reduce the probability of lightning strike damage. The steel mill arranges lightning protection measures around the electromagnetic flow meter, focusing on power lines, A/D converters, and signal systems to implement lightning protection measures in order to improve the control level of electromagnetic flow meter lightning protection.
The environment is the main source of interference for industrial water metering electromagnetic flow meters in steel mills. The environment of industrial water measurement in steel mills is relatively complicated, such as welding transformers around the electromagnetic flow meter, which interferes with the measurement results. Therefore, after the steel mill debugs the electromagnetic field flow meter, it should maintain the environment of industrial water measurement and try not to change the original state of the environment. Prevent the signal of the electromagnetic flow meter from fluctuating excessively, and ensure that the instrument is in an efficient and high-quality environment.
The system zero point of the electromagnetic flow meter is a kind of factor to ensure the accuracy of industrial water measurement in steel mills, which changes during the long-term operation of the electromagnetic flow meter. In the maintenance work of the electromagnetic flow meter, the steel mill actively checks the zero point of the system and adjusts it immediately if the offset problem is found, so as to avoid the interference of the system's zero point on the industrial water measurement, which reflects the practical value of zero point maintenance.
The electromagnetic flow meter plays an important role in the industrial water measurement of steel mills, improves the way of water measurement, and reflects the advantages of the electromagnetic flow meter. The electromagnetic flow meter is the main instrument in industrial water measurement in steel mills, which eliminates the interference of external factors. Therefore, during the operation of electromagnetic flow meters, the application of maintenance measures should be fully implemented to improve the performance of electromagnetic flow meters in industrial water measurement in steel mills.
