SZGB-7光电转速传感器是一种高性能的单头反射式光电转速测量设备。它采用调制光结构，具备测量距离远且不受环境光干扰的优势。传感器内部集成了调制光发射和接收单元，能够将被测物体反射回来的光信号转换为电脉冲信号，进而实现对转速和线速的无接触测量。

该传感器的测量范围广泛，可达到1～30000转/分钟，检测距离在50～150毫米之间。其输出信号幅值稳定，“1”状态为5±0.5伏特，“0”状态低于0.5伏特，供电电源为直流10～14伏特。在反射条件方面，需要使用10×10毫米²的定向反射纸。它的工作环境温度为5℃～40℃，相对湿度不超过85%，外形尺寸约为80×28×39毫米（含安装架）。

SZGB-7光电转速传感器的输出电平适应性强，能够与各种转速数字显示仪配套使用，并且可以直接与计算机接口电路相连。这使得它在工业自动化、机械制造、汽车检测等多个领域都有广泛的应用，为设备的转速监测和控制提供了可靠的解决方案。

The SZGB-7 Photoelectric Tachometer Sensor is a high-performance single-head reflective photoelectric tachometer measurement device. It adopts a modulated light structure, which provides the advantages of long measurement distance and immunity to ambient light interference. The sensor is equipped with integrated modulated light emission and reception units, capable of converting the reflected light signals from the measured object into electrical pulse signals to achieve non-contact measurement of rotational and linear speeds.

The sensor has a wide measurement range of 1 to 30,000 revolutions per minute and a detection distance of 50 to 150 millimeters. The output signal amplitude is stable, with a high level of 5 ± 0.5 volts for "1" and below 0.5 volts for "0", and it operates on a DC power supply of 10 to 14 volts. For reflection conditions, a 10×10 mm² directional reflective paper is required. The working environment temperature ranges from 5℃ to 40℃, with a relative humidity of no more than 85%, and the overall dimensions are approximately 80×28×39 mm (including the mounting bracket).

The SZGB-7 Photoelectric Tachometer Sensor features strong output level adaptability and can be used in conjunction with various digital tachometer displays. It can also be directly connected to computer interface circuits. This makes it widely applicable in various fields such as industrial automation, machinery manufacturing, and automotive testing, providing a reliable solution for rotational speed monitoring and control of equipment.