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After the electromagnetic flowmeter is installed and wired, and before it is officially put into operation, you should strictly check whether the installation and wiring are correct. It must be pointed out: Instruments have been strictly adjusted and calibrated in real-flow at the manufacturer. If they pass the inspection one by one and then leave the factory, they can generally be put into operation without any adjustments. Therefore, for problems encountered during the initial operation, you should check, carefully analyze and troubleshoot one by one according to the points described in this manual. Be careful not to blindly adjust the instrument and mess up the entire set of instruments that have been adjusted, or even damage them. When the instrument is put into operation, follow the following steps:: A. First, open the front and rear valves of the sensor and let the sensor measuring tube be filled with the measured medium. B. Turn on the power. Use an electric pen to check whether the polarity of the converter's power terminals matches the wiring diagram. At this time, there is flow in the pipe, and the digital display of the converter should indicate a certain value. ； C. Adjust zero position. One hour after the electromagnetic flowmeter is powered on, first tightly close the valve on the downstream side of the sensor, and then close the valve on the upstream side, so that the fluid in the pipe stops flowing without leakage and the flow rate is zero. Use an ammeter to measure the converter output signal, it should be 4±0.04mA. If it is too high or too low, the current output zero can be reset. Make the output signal within the above range. For more information, please visit the company’s official website http://www.yb1518.com/. Please keep this link when reprinting! http://www.yb1518.com/UploadFiles/2012717174126829.jpg