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The intelligent electromagnetic flowmeter developed and manufactured by Changzhou Liangbang Instrument was developed based on the standard manufacturing system. Its advanced design concept ensures the high precision and high reliability of the product. Compared with the old electromagnetic flowmeter, it has its own High measurement accuracy, reliability, good stability, complete functions, long life and other advantages. Electromagnetic flowmeter electromagnetic loss is a variety of reasons, there may be a magnetic field around the interference and loss, it may also cause the flowmeter's own structure caused by the signal transmission speed interference, no matter what the reason, under normal circumstances, electromagnetic flowmeter electromagnetic Losses have the following forms:
1. Eddy current loss in metal measuring tube
The higher the frequency of the excitation power source, the stronger the magnetic field strength, the longer the axial length of the magnetic field, the larger the diameter of the measuring tube, and the thicker the wall thickness, the larger the eddy current, the greater the eddy current loss, and the magnetic induction intensity lagging behind the magnetic field current. The larger the phase difference angle.
2. Hysteresis loss
Hysteresis loss is due to the hysteresis characteristics of magnetic materials. After the coil is connected to the alternating current, due to the magnetic hysteresis of the magnetic material, the magnetic flux phase lags behind the current by a certain angle (hysteresis angle). When the magnetic induction in the core is not saturated, the hysteresis loss is very small. Therefore, the yoke and iron core of the electromagnetic flowmeter are made of high-perforance electrician silicon steel sheet. The rolling direction of the silicon steel sheet is preferably the same as the direction of the magnetic flux. Thus, the hysteresis loss is greatly reduced and can be neglected.
3 , eddy current loss
The eddy current loss yoke in the yoke should be made of thin sheets with high magnetic permeability and low electric rate. Each piece should be insulated to reduce losses. Normally, the frequency of commercial power of tens of Hertz, the thickness of silicon steel sheet is 0.25~0.5. Mm can make the eddy current loss not exceed the allowable value.
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With the development of the instrumentation industry, the breakthrough in the technology of the instrumentation industry is inseparable from the support and efforts of the instrument manufacturers. As a flow meter manufacturer, Changzhou Liangbang Instrumentation Co., Ltd. strives to break through the bottleneck, independently research and develop new technologies, and learns the craftsmanship and experience of domestic and international flowmeter instrument manufacturers, so that we can make use of the short and short oceans for our use. The introduction of professional production equipment, design more new products to meet the needs of more customers.
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