What should we pay attention to when selecting weighing sensors for supporting systems? Weighing sensors are widely used in various fields such as metallurgical industry, chemical production, electrical engineering, paper industry, machinery manufacturing, and food processing. Resistance strain gauge weighing sensors are commonly used, but weighing sensors are basically integrated into supporting systems. What should we pay attention to when selecting weighing sensors for supporting systems? How should we choose weighing sensors for different weighing systems? When weighing sensors are used in practice, factors such as the weight of the platform scale body, vibration, impact, and eccentric loading should be considered. Therefore, the principles for selecting the range of weighing sensors for different weighing systems also vary. Firstly, the capacity of the selected weighing sensor should be as close as possible to the values in the manufacturer's standard product series. Otherwise, selecting a non-standard sensor will not only be expensive but also difficult to replace if damaged. Secondly, within the same weighing system, it is not allowed to use platform scales with different rated loads, otherwise the system will not work properly.