Digital flow meter is a new-type electric stream flowing measurement device with the fast development of digital technology. It is made on the basis of electromagnetic induction to test the volume flowing of conductors. Its unique advantage is widely made use of in every conductor liquid testing. The digital flow meter's testing theory is as follows: when the electricity goes through the conductor, the liquid inside the electric flow meter would form a proportional voltage against average stream flowing speed. The electromagnetic signal will go through the poles contacting with liquid. Through the wire and cable devices, the voltage signal would be sent to amplifier. And then, the universal signal in standard format would be made. Based on the digital measuring theory, digital flow meter owns the following advantages: its transmitter is with simple structure. There are gadgets without movement requirement. And, they would not form any influence to save energy for liquidity movement. Therefore, extra voltage loss would not be met when the flowing go through the pipeline. What's more, it would not lead to friction and stuck problem. Especially for the measurement on ore liquid or pollution water with solid particles, it can protect the flow meter as well. Meanwhile, it is without the movable gadgets on total structure. It can be made into electrode with anti-erosive material. So, its anti-erosion ability would be quite well. Such type of digital flow meter can be used for the measurement on all types of erosive media. Commonly speaking, digital flow meter is a volume flowing tester. During the measuring process, it would not be influenced by temperature, density and electric conducting rate of media to some extent. In such case, the electric flow meter can be used for the test on other electric conducting liquid without any rectification only after standard fix. The measuring range of digital flow meter is quite wide. The same device can afford the measuring range rate by 1:100. Besides, digital flow meter sets the proper proportion to average flowing speed of the tested objects. There is nothing to do with flowing status of symmetric liquid axis. Another point of digital flow meter is without mechanical inertia and fast in response. It can be used to test sudden pulse flow. The linear performance is also eye-catching. For such reasons, the tested signal through wholesale flow meter can be directly sent on the standardized basis via linear conductor in both short and long distance.
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