Zhangzhou electromagnetic flowmeter

Zhangzhou electromagnetic flowmeter: Zhangzhou has manufacturers of electromagnetic flowmeters and many distributors to serve customers. However, many new friends may not know the electromagnetic flowmeter. Let me introduce the electromagnetic flowmeter. 1. High accuracy: New excitation methods such as low-frequency rectangular wave excitation, dual-frequency excitation, and programmable excitation have improved the signal-to-noise ratio of the sensor output flow signal compared with the mains frequency electric excitation method adopted in the previous period; advanced integration The operational amplifier greatly reduces the noise of the device; adopts digital processing methods and other measures to continuously improve the measurement accuracy and performance of the electromagnetic flowmeter; the theoretical study of the weight function of the electromagnetic flow induction signal has solved the problem of the flow velocity distribution in the pipeline to a certain extent. Axisymmetric flow measurement. Therefore, modern electromagnetic flowmeters may reach an indication error of ±0.2%. Compared with the past, the error accuracy of ±1% relative to the range has been greatly improved. Moreover, from the flow detection instrument that is mainly used in process control, to the use of indication error display, the integration accuracy of the flowmeter is improved, and it becomes a flow measurement instrument that is conducive to the trade transfer between the supplier and the demander. 2. High reliability and multifunctionality The change of the zero point of the electromagnetic flowmeter is mainly caused by the secondary magnetic flux formed by the eddy current in the alternating magnetic field. Low-frequency rectangular wave excitation can effectively reduce the generation of secondary magnetic flux, so the zero point is stable. The frequency of the rectangular wave magnetic field is an integral multiple of the power frequency, and the AC average value of the signal sampling is zero, which greatly offsets the influence of power frequency interference in the signal. Modulated dual-frequency excitation and programmable excitation can reduce the influence of electrochemical noise of the electrode during slurry fluid measurement, and improve the reliability and stability of the sensing signal. Highly integrated microelectronic components have reduced the failure rate of hardware, and measures such as hardware and software shielding techniques have effectively increased the reliability of the converter. A single-chip computer is embedded in modern electromagnetic flow conversion circuits. Make full use of the computer's information storage, time-sharing processing, high-speed operation and control capabilities, so it is easier to achieve multiple functions such as two-way measurement, empty pipe detection, multi-range automatic switching, man-machine dialogue, communication with the host computer, and self-diagnosis. The new generation of electromagnetic flowmeters with HART protocol and other fieldbus communication provides conditions for users to realize a new fieldbus production control and management. 3. Miniaturization The magnetic field coil of the weight-distributed magnetic field electromagnetic flow sensor has a greatly shortened length for the excitation coil with a uniformly distributed magnetic field; the improvement of the signal-to-noise ratio of the low-frequency excitation reduces the magnetic induction intensity of the working magnetic field. Therefore, the size of the coil core can be greatly reduced, and the length of the sensor can be shortened. The integrated structure in which the sensor and the converter are combined can further reduce the manufacturing and installation costs of the electromagnetic flowmeter. 4. Low energy consumption The magnetic field excited by the low-frequency rectangular wave works in the DC state most of the time, and the eddy current loss of the iron core is small; the reduction of the magnetic induction intensity greatly reduces the energy consumption of the electromagnetic flowmeter. At present, the power consumption of a general electromagnetic flowmeter is within 10-20W. The two-wire electromagnetic flowmeter powered by DC 24V voltage, including excitation current and signal output, is only 4-20mA. What's more, the power consumption is only 2mW, and it can be used for ten years when powered by a lithium battery. Like a water meter, electromagnetic water meters that can be used without AC power are also popular. 5. The scope of application and the expansion of the market scope. The development of modern electronic technology and the continuous emergence of new insulating materials and magnetic materials, with the conditions to manufacture different forms of electromagnetic flowmeters, can solve the corrosion and pollution of the electrode by the measuring medium. Capacitive electromagnetic flowmeter can solve fluid measurement with medium conductivity as low as 1mS/m, instead of traditional mechanical volumetric flowmeter, it is used to measure pure water, sugar desalination and oil-containing low-conductivity fluid. The food industry, beverages, and pharmaceutical production require short measurement time and quantitative batch canning; the measurement of pulp and pulsating flow in papermaking, mineral pulp and other slurries requires fast response speed, and it is necessary to solve the measurement jitter phenomenon caused by the sharp noise of DC polarization voltage. High frequency excitation, dual frequency excitation electromagnetic flowmeter can play its role. A breakthrough in the theory that electromagnetic flowmeters can only measure conductive liquids, and theoretical research and testing of non-conductive liquid electromagnetic flowmeters has also entered the product development stage. In short, the continuous expansion of new fields of use promotes the continuous development and technological advancement of electromagnetic flowmeters. Now Zhangzhou electromagnetic flowmeters are mixed. When you consider electromagnetic flowmeters, you must confirm the above points. Based on my many years of field experience, Kaidi's electromagnetic flowmeters have been used before, and they are not bad. I recommend you to ask questions. Look.
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