Application of On-Line Diagnosis Technology in Electromagnetic Flow Meter

Abstract: The application information of online diagnosis technology in electromagnetic flowmeters is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. 1. Why does the instrument need online diagnosis technology? In factory control systems, field instrumentation (sensors and actuators) is one of the key factors in ensuring product quality. The scale of the current automatic control system is getting larger and larger, and the number of field instruments is increasing. . For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the application article details of online diagnosis technology in electromagnetic flowmeters. 1. Why does the instrument need online diagnosis technology? In factory control systems, field instrumentation (sensors and actuators) is one of the key factors in ensuring product quality. The scale of the current automatic control system is getting larger and larger, and the number of field instruments is increasing. In a complex control system, the failure or signal drift of any set of instruments often triggers the continuous response of the system. It is very difficult to quickly locate the faulty instrument and restore the system. Especially when the signal drift of the instrument is a gradual process, the signal drift before exceeding the limit is not very noticeable to the operator. Once the signal drift accumulates to a certain extent, the extreme consequence of the failure of the field instrument is often that the entire production line must be shut down for maintenance, which means that the production efficiency of the factory decreases and the production cost increases. The so-called online diagnostic instrument is that the instrument integrates the diagnostic function in addition to its own measurement or control function. The instrument not only conducts its own fault diagnosis, but also monitors the influence of external conditions on the instrument, so as to ensure the rapid recovery of the faulty instrument and prevent the instrument from having a negative impact. This enables the pre-maintenance of the system and greatly improves the production efficiency of the factory. 2. Electromagnetic flowmeter with online diagnosis function is widely used in important production links of custody transfer metering and process control because of its high accuracy and easy maintenance. However, the installation environment and working conditions of the electromagnetic flowmeter will significantly affect its performance. For example, changes in the concentration and output of the measured medium or the pollution and corrosion of internal components will cause the drift of the measurement value or the reduction of the measurement accuracy, even when the flowmeter Mounting too close to elbows or other disturbing devices can also produce false outputs. It is for these reasons that although electromagnetic flowmeters are reliable, many flowmeters installed in factories are believed to be inaccurate. 1. Development background of on-line diagnostic electromagnetic flowmeters“Diagnostic Requirements for Field Instruments”The guideline mainly summarizes the user's specific requirements for on-site fault diagnosis in the process of using the instrument as a guide for the instrument manufacturer in product development. Given their prominence in the flowmeter family, electromagnetic flowmeters are independently defined in Section 2.2 of Part 3 of this guideline: Requirements for on-line diagnostics of electromagnetic flowmeters. 2. An electromagnetic flowmeter with self-diagnosis function is a new generation of electromagnetic sewage flowmeter converter developed based on the concept of guidelines. Compared with conventional electromagnetic flowmeter converters, this type of converter includes signal analysis, the latest test methods and new test paths and evaluation software to compensate for early electromagnetic flowmeter failures, external disturbances and installation influences. Testing and signaling alarms, its comprehensive diagnostics not only detect unreliable measurements and inform engineers of the cause of the problem. Traditional electromagnetic flowmeter diagnostic analysis is also limited to the detection of the microcontroller and memory of the instrument itself. The built-in triple diagnostic function allows field engineers to judge the status of the instrument and the quality of the measured values ​​in a timely manner. This triple diagnostic provides the engineer with comprehensive flowmeter operational information: 100% testing of the sensor and transducer microprocessor, memory, software, electronics temperature and output testing; internal accuracy testing to ensure the meter is within specification Operational; 100% application testing exceeding SIL2 and NAMU standards. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Application of On-Line Diagnosis Technology in Electromagnetic Flow Meter'

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