1.Key Technical Specifications Measuring object: Dynamic rotational torque Standard measuring range: 0–5N·m / 0–10N·m / 0–20N·m / 0–50N·m optional Sensitive element: High stability foil strain gauge Elastic body material: High-strength structural alloy steel Operating temperature: -20℃ ~ +85℃ with full zero and span temperature compensation Comprehensive accuracy: ±0.3%FS ~ ±0.8%FS Safe overload: 200%FS; breaking torque reaches 400%FS Response time: ≤8ms fast dynamic torque response Excitation voltage: 3–12VDC Output signal: mV/V analog signal, digital I2C signal optional Protection grade: IP64, dustproof and splash-proof Service life: Over 15 million torque cycle tests Structural feature: Flange connection, small outer diameter for limited installation space 2.Core Function Collect real-time torque values during motor rotation, transmission and torsion testing and transmit accurate signals to control unit. Provide torque parameter support for motor performance testing, gearbox efficiency detection and rotating equipment closed-loop control. Monitor abnormal overload torque, feed back fault signals to PLC and trigger equipment overload protection stop. Compact integrated flange structure simplifies assembly, suitable for miniature drive test benches. Low zero drift and strong anti-interference capacity, stable long-time measurement under continuous rotation operation. 3.Working Principle This sensor adopts foil strain gauge piezoresistive torsion detection technology: Rotational torque loads twist the alloy elastic body to generate tiny reversible torsional deformation. Strain gauges pasted on the elastic body produce resistance changes linearly proportional to torque value. Built-in full Wheatstone bridge converts resistance variation into weak analog voltage signals. External conditioning circuit completes temperature compensation, signal amplification and filtering to output standard torque signals for system collection and analysis. 4.Application Scope Applicable Equipment Micro motor test benches, small gear reducer testing machines, robot joint drive modules, handheld torsion testing tools Matching Components Automation PLC, torque display instrument, motor drive control module Application Scenarios Motor output torque detection, transmission component efficiency testing, robot joint torsion monitoring, miniature product torsion fatigue life testing