【中文产品介绍】
SZGB-20光电转速传感器是一款基于先进光学原理研发的非接触式转速测量装置，专为工业自动化、设备状态监测等场景设计。该产品采用创新光感测技术，通过捕捉旋转部件表面标记点的反光信号变化，实现对各类机械转轴、齿轮、叶轮等旋转体的转速实时检测，适用于金属、塑料等多种材质的被测物体。
本产品搭载高灵敏度光电转换模块，可在50mm至300mm范围内稳定获取转速信号，具备0.1Hz-20kHz的宽频响应特性，满足从低速精密设备到高速旋转机械的全场景测量需求。优化设计的信号处理电路可有效抑制环境光干扰，确保在温度-25℃至+85℃、相对湿度≤95%的复杂工况下长期稳定工作。
产品采用一体化紧凑型结构，304不锈钢主体配合IP67防护等级外壳，既保证机械强度又具备优异的防尘防水性能。模块化设计便于安装维护，标配M18标准螺纹接口和可调节支架，支持水平/垂直多角度安装。输出端配置NPN/PNP兼容的方波信号，可直接接入PLC、变频器等工业控制系统，同时提供4-20mA模拟量输出选项。
在汽车制造、纺织机械、印刷包装、水处理等行业中，该传感器可有效应用于电机转速监控、设备启停保护、生产节拍控制等场景。特殊设计的抗振动结构使其在冲压设备、工程机械等强振动环境中仍保持可靠测量，双色LED指示灯实时显示工作状态，便于现场调试维护。
【English Product Introduction】
The SZGB-20 Photoelectric Tachometer Sensor is a non-contact rotational speed measuring device developed with advanced optical principles, specifically designed for industrial automation and equipment condition monitoring applications. Utilizing innovative photoelectric sensing technology, it captures reflected light variations from markers on rotating components to achieve real-time speed detection for various rotating bodies including shafts, gears, and impellers, compatible with both metallic and non-metallic materials.
Equipped with a high-sensitivity photoelectric conversion module, the sensor maintains stable signal acquisition within 50mm to 300mm detection range. Featuring 0.1Hz-20kHz broad frequency response, it accommodates speed measurement requirements from low-speed precision equipment to high-speed rotating machinery. The optimized signal processing circuitry effectively suppresses ambient light interference, ensuring reliable operation under challenging conditions (-25℃ to +85℃ temperature range, ≤95% relative humidity).
Constructed with 304 stainless steel housing and IP67 protection rating, the compact unit combines mechanical durability with exceptional dust/water resistance. Modular design facilitates easy installation and maintenance, featuring standard M18 threaded interface and adjustable mounting bracket for multi-angle positioning. The sensor provides NPN/PNP compatible square wave output for direct PLC integration, with optional 4-20mA analog output for diversified industrial control systems.
Widely applied in automotive manufacturing, textile machinery, printing/packaging, and water treatment industries, this device excels in motor speed monitoring, equipment safety protection, and production rhythm control. Its vibration-resistant structure ensures reliable measurement in stamping equipment and construction machinery environments. Dual-color LED indicators provide instant operational status feedback, significantly enhancing field debugging efficiency.
