As a core device for precision measurement in the industrial field, the dose weighing system has become an essential tool in industries such as pharmaceuticals, chemicals, and food, thanks to its high precision, automation, and intelligence features. Through the coordinated work of sensor technology, data processing modules, and actuators, the system enables precise material weighing, dynamic monitoring, and process optimization, significantly enhancing production safety and quality control levels.
I. Core Functional Modules
The dose weighing system consists of three major modules:
1. Sensing Module: It uses resistive load cells to convert weight signals into electrical signals. For example, a design with four sensors in parallel can calculate the average weight value of the material. The range is selected in combination with a safety factor (usually 1.5), taking into account both accuracy and equipment lifespan.
2. Data Processing Module: It uses a PLC (Programmable Logic Controller) to conduct real - time analysis of the 0 - 5V voltage signals output by the sensors, calculate the material flow, and trigger the actuators. Some systems are equipped with transmitters to amplify weak signals and enhance anti - interference ability.
3. Execution and Monitoring Module: It integrates devices such as automated valves and conveyor belts, adjusting the batching process according to the PLC instructions. Meanwhile, it is equipped with a human - machine interaction interface and a data storage unit, supporting the retrieval of historical records and the generation of production reports.
II. Technical Advantage Analysis
1. Milligram - Level Precision: High - sensitivity sensors (such as those with a specification of 2mV/V) combined with algorithm compensation technology can control the error within ±0.1%, meeting the requirements of strict scenarios such as the weighing of pharmaceutical raw materials and the filling of rocket propellants.
2. Full - Process Automation: From raw material input to finished product packaging, the system automatically completes weighing, proportioning, and feedback adjustment, reducing errors caused by manual intervention. For example, in chemical production, it can adjust the feeding amount of the reaction kettle in real - time to ensure synthesis efficiency.
3. Multiple Safety Guarantees: The explosion - proof design (such as explosion - proof enclosures and electrostatic protection) is suitable for flammable and explosive environments. The abnormal warning function can stop the machine immediately to prevent accidents caused by overloading or equipment failures.
4. Flexible Adaptability to Requirements: It supports both static and dynamic weighing modes. The static system is suitable for small - batch, high - precision scenarios (such as laboratories), while the dynamic system can be integrated into the production line to achieve continuous metering and data management.