Choosing the appropriate accuracy class of a force sensor requires considering the specific application scenario and the required measurement accuracy, balancing cost and performance, and avoiding "insufficient accuracy" or "over-design."
Match the accuracy class to application requirements
Scientific research experiments and metrological calibration: Requires extremely high stability and repeatability. Choose an accuracy class of ≤0.03%FS or C1 to ensure data traceability and minimal error.
Industrial automation and robot force control: Processes such as assembly, grinding, and tightening require dynamic response and high repeatability. 0.05%FS ~ 0.1%FS or C3 (≈0.033%FS) is recommended, balancing accuracy and cost.
Medical equipment and prosthesis testing: Involves human safety and requires high reliability. It is recommended to choose ≤0.1%FS with temperature compensation functionality.
General Weighing and Logistics Sorting: For applications with low precision requirements, 0.2%FS ~ 0.5%FS or C6 level and above can be selected to reduce system costs.
Avoid Common Selection Mistakes:
Blindly pursuing high precision: Precision exceeding actual needs will significantly increase costs and will be difficult to leverage in harsh operating conditions.
Ignoring environmental impact: High temperatures, vibrations, and electromagnetic interference will degrade actual measurement accuracy. Products with temperature compensation and IP67 protection rating should be prioritized.
Ignoring signal type matching: Analog signals (e.g., 4-20mA) are susceptible to interference and suitable for short distances; digital signals (e.g., CAN, EtherCAT) have strong anti-interference capabilities and are suitable for complex industrial environments.