High Working Temperature Electronic Balance Alnico Disc Magnet Quality Assurance

As a kind of high-accuracy mass metrology, electronic balance is widely used in school, laboratory and factory due to excellent accuracy, fast response speed, high reliability and easy operation. Actually, sensor, electronic and microcomputer technology played an important role in the development of electronic balance, and electronic balance magnet is one of the representative application of cast Alnico magnet.

The weighing principle of electronic balance is bases on the balance between electromagnetic force and gravity. The major components of electronic balance include power, electromagnetic force equilibrium transducer, photoelectric sensor, keyboard, display and control circuit.

The electromagnetic force equilibrium transducer in equilibrium under no-load condition. The position of moving coil will change after placed object to electronic balance, then influence light intensity which received by the photosensitive element, thus output current will be also changed. This variation will control the moving coil current after processed by the microprocessor. Hence equilibrium transducer will be back to the equilibrium state. Meanwhile, current change of the moving coil will translate into the digital signal by the microprocessor, and display reading rapidly.