The BTLD series intelligent electromagnetic flowmeter produced by Suzhou Beite Intelligent Instrument Co., Ltd. has the following characteristics: it is not affected by the density, viscosity, temperature, pressure and electric rate of the fluid, and the linear measurement principle can achieve high-precision measurement; the measurement tube has no obstruction, the pressure loss is small, and the straight pipe section requirement is low; the nominal diameter DN6-DN2000 covers a wide range, and the lining and electrodes have a variety of options to meet the measurement of multiple conductive fluids. Requirements; the converter adopts a programmable frequency low-frequency rectangular wave excitation, which improves the stability of the flow measurement, the power loss is small; the converter adopts a 16-bit embedded microprocessor, full digital processing, fast calculation speed, strong anti-interference ability, reliable measurement, high precision, and the flow measurement range can reach 1500:1; high-definition backlit LCD display, all Chinese menu operation, easy to use, simple operation, easy to learn and understand; with RS485 or RS232 digital communication signal output; with conductivity measurement function, can judge whether the sensor is empty tube, has self-test and self-diagnosis function; using SMD devices and surface mounting (SMT) technology, the circuit has high reliability; can be used in corresponding explosion-proof places.