There are many kinds of sensors to realize electromechanical conversion, such as resistance strain type, electromagnetic force type and capacitance type. Electromagnetic force type is mainly used in electronic balance, capacitance type is used in some electronic hanging scales, and most weighing instruments use resistance strain type weighing sensors. The invention has the advantages of simple structure, high precision and wide application, and can be used in relatively harsh environment. Therefore, the relevant data of resistance strain gauge load cell has been widely used in weighing instruments. ...