Weighing equipment is mainly composed of three main parts: load-bearing system, force transfer system (i.e. transducer), and display system (indicator). Force transfer system (i.e. sensor) is the key component to determine the measurement performance of weighing equipment, common force transfer system lever force transfer system and deformation force transfer system, according to the conversion method is divided into photoelectricity, hydraulic, electromagnetic force, capacitance, magnetic polarity change form, vibration, gyroscope type, resistance strain type and so on 8 categories. Lever force transmission system is mainly composed of load-bearing lever, force-transferring lever, bracket parts and coupling parts such as knives, knife bearer, hooks, rings and so on.
The deformation force transmission system, spring is the earliest people use the deformation force transmission mechanism. Spring scales can weigh from 1 milligram to tens of tons, and the springs used are quartz wire springs, flat coiled springs, coil springs and disc springs. Spring scales are highly affected by factors such as geographic location and temperature, and are less accurate in their measurement. In order to obtain a high degree of accuracy, people have developed a variety of load cells, such as resistance-strain, capacitance, pressure magnetic and vibrating string load cell, etc., to resistance-strain sensors are most widely used. Weighing equipment value system for the weight indicator, it has a digital display and analog scale display two kinds. Types of weight indicator: 1. Electronic scale 81.LCD (Liquid Crystal Display): Plug-in free, power saving, with backlight; 2. LED: Plug-in free, power consuming, very bright; 3. Lamp: Plug-in free, power consuming, very high.VFDK/B (keypad) types: 1. Membrane keypad: Contact type; 2. Mechanical keypad: Combination of many individual keys;