What working conditions will the electromagnetic flowmeter be affected by in use?

Abstract: The information about the working conditions that the electromagnetic flow meter will be affected by in use is provided by the excellent flow meter and flow meter manufacturers and quotation manufacturers. After practice, there are mainly the following three aspects that have an impact on the use of electromagnetic flowmeters, and these problems should be analyzed. 1. The measurement range of the electromagnetic flowmeter is large, generally 10:1, but the lower limit of measurement is limited by many factors: Re10000 is the vortex flow. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the details of the article that the electromagnetic flowmeter will be affected by the working conditions in use. After practice, there are mainly the following three aspects that have an impact on the use of electromagnetic flowmeters, and these problems should be analyzed. 1. The measurement range of electromagnetic flowmeter is large, generally 10:1, but the lower limit of measurement is limited by many factors: Re>10000 is the most basic condition for the vortex flowmeter to work. In addition, it is also affected by the vortex to generate a response signal, and the vortex frequency f is also small, which will make signal processing difficult. The upper limit of the measurement is the frequency response of the sensor and the frequency limit of the circuit. Therefore, the flow rate range must be calculated and calculated during the design, and the selection should be made according to the flow rate of the fluid. The environmental conditions of the use site are complex. In addition to the environmental temperature, humidity, atmosphere and other conditions, electromagnetic interference should also be considered when selecting models. 2. Vibration is also a major enemy of this type of instrument. Therefore, care should be taken to avoid mechanical vibration during use, especially the lateral vibration of the pipeline (the vibration perpendicular to the axis of the pipeline and the axis of the vortex generation body), which cannot be suppressed and eliminated in the structural design of the flowmeter. Since the vortex street signal is also sensitive to the influence of the flow field, it is not suitable for use when the length of the straight pipe section cannot guarantee the necessary flow conditions for a stable vortex street. Even the capacitive type and ultrasonic type with strong vibration resistance can not be ignored to ensure that the fluid is a fully developed unidirectional flow. 3. The temperature of the medium also has a great influence on the performance of the vortex flowmeter. For example, the pressure stress type vortex flowmeter cannot be used for a long time at 300°C state, because its insulation resistance will change from 10-100M at room temperatureΩDropped to 1-101Ω, the output signal also becomes smaller, resulting in the deterioration of the measurement characteristics. In the measurement system, the sensor and the converter should be installed separately to avoid long-term high temperature affecting the reliability and service life of the instrument. Vortex flowmeter is a relatively new type of flowmeter, which is in the development stage and not very mature. Only after reasonable selection and correct installation, it is necessary to carefully and regularly maintain in the process of use, continuously accumulate experience, and improve the predictability of system failures and the ability to judge and deal with problems, so as to achieve satisfactory results. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'What working conditions will the electromagnetic flow meter be affected by in use?'

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