1.Key Technical Specifications Measuring type: Dynamic rotary torque Standard measuring range: Optional 0.2N·m / 0.5N·m / 1N·m / 5N·m / 10N·m Sensitive element: High-stability foil strain gauge Elastic body material: High-strength 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; ultimate breaking torque 400%FS Response time: ≤8ms fast dynamic torque response Excitation voltage: 3–12VDC Output signal: mV/V analog signal, I2C digital signal optional Protection grade: IP64, dustproof and splash-proof Service life: Over 15 million torsion cycle tests Structural feature: Ultra-small flange design, compact overall size for narrow installation space 2.Core Function Real-time collect torque signals during motor operation, transmission torsion and torsion testing, and deliver precise data to main control unit. Supply torque reference parameters for micro motor performance inspection, miniature reducer efficiency test and rotary equipment closed-loop control. Detect abnormal overload torque, feedback alarm signals to PLC and activate equipment overload protection shutdown. Mini flange integrated structure is easy to assemble, perfectly fit tiny drive test stations and robot joint modules. Low temperature drift and strong anti-interference performance, maintain stable measurement under long-time continuous rotation. 3.Working Principle This sensor uses foil strain gauge piezoresistive torsion measurement technology: Rotational torque acts on the alloy elastic body and generates tiny reversible torsional deformation. Strain gauges attached to elastic body produce resistance changes linearly proportional to torque magnitude. Built-in full Wheatstone bridge converts resistance variation into weak analog voltage signals. External signal conditioning circuit realizes temperature compensation, amplification and filtering, and outputs standard torque signals for system acquisition and analysis. 4.Application Scope Applicable Equipment Micro DC motor test benches, small gear reducer testers, lightweight robot joint drive units, portable torsion testing tools Matching Components Automation PLC, torque display meter, motor drive control module Application Scenarios Mini motor output torque detection, precision transmission component efficiency testing, small robot joint torsion monitoring, micro-product torsion fatigue life testing