A load cell is used to determine mass: The weight force exerted by the sample is converted into an electrical signal by the load cell. Load cells are therefore the most important components of an electronic scale. One of the most widely used technologies is based on strain gauge technology: an analog load cell consists of a measuring element (so-called spring body) made of steel or aluminum, on which a strain gauge (Wheatstone bridge) is mounted. Each electronic scale has an integrated load cell that ensures that a weight can be measured.
Digital Load cell system is a brand new electronic weighing appliance developed from the traditional strain gauge sensor by using modern micro-electronics technology and microcomputer integration. It includes two parts, analogue load cell (strain gauge) and digital converter module. Converter module is a high-integrated electronic circuit and adopts SMT on the surface. It mainly includes amplifier, A/D converter, microprocessor ( CPU), memorizer ( EEPROM calibration memory), interface circuit (RS485 ) and digital temperature load cell
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