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The J-MAG-C series plug-in electromagnetic flowmeter has the characteristics of high cost-effectiveness and easy installation, and is widely used in the field of large diameter flow measurement. The measurement accuracy is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity; The plug-in installation method eliminates the need for dismantling pipelines for maintenance, making it suitable for on-site use in situations where water cannot be stopped; Bidirectional measurement mode, main variable can be set, not limited by installation direction, three integration modes: forward total, reverse total, and difference total; Self diagnostic function, air traffic control alarm, flow upper and lower limit alarm; The nominal diameter range is wide, suitable for all diameter pipelines between DN100 and DN3000. The sensor adopts advanced processing technology, solid-state packaging, vibration resistance, leakage resistance, long service life, and has good measurement accuracy and stability.