以下是AZ8000光电式转速表/AZ-8000的产品中英文介绍：

AZ8000光电式转速表是由台湾衡欣公司推出的一款非接触式转速测量仪器。它采用光电反射原理进行测量，通过发射红外线并接收经待测目标反射的光线来获取转速信息。该转速表具有免接触式测量的特点，可避免因接触测量而对被测物体造成的影响。其操作简单便捷，即使是初次使用的用户也能快速上手。它还具备自动换挡功能，能够根据不同的测量需求自动切换量程。此外，该转速表在20分钟内未操作时会自动关机，有效节省电量。它还能显示低电压提示，提醒用户及时更换电池。转速表可以保留最大值、最小值和平均值，方便用户进行数据记录和分析。

在技术参数方面，AZ8000的量程范围为10~99999转速RPM，分辨率为0.001/0.01/0.1/1RPM，准确度达到0.04% ±2dgts。其反应时间为1秒（>60rpm），在10~60rpm时反应时间大于1秒。采用LCD显示，可清晰显示五位数的测量结果。尺寸为124（L）x50（W）x33（H）mm，重量仅为140g，便于携带和使用。供电电源为9V电池，附件包括纸盒、电池、反光帖纸和使用说明书。

该转速表适用于多种场景，如汽车、摩托车生产制造及维修，可用于测量引擎马达的转速；在家用电器生产制造及维修中，可测量风扇马达的转速；在工厂中，可用于测量电机、输送带等的转速。

The AZ8000 photoelectric tachometer is a non-contact tachometer launched by Taiwan Hengxin Company. It adopts the photoelectric reflection principle for measurement, obtaining speed information by emitting infrared rays and receiving the reflected rays from the target. The tachometer features non-contact measurement, which can avoid the influence on the measured object caused by contact measurement. It is easy to operate, and even first-time users can quickly get started. The device also has an automatic gear shifting function, which can automatically switch ranges according to different measurement requirements. In addition, the tachometer will automatically shut down after 20 minutes of inactivity, effectively saving power. It can also display low voltage prompts to remind users to replace the battery in time. The tachometer can retain the maximum, minimum, and average values, facilitating data recording and analysis for users.

In terms of technical parameters, the AZ8000 has a measuring range of 10~99999 RPM, with a resolution of 0.001/0.01/0.1/1 RPM and an accuracy of 0.04% ±2dgts. The response time is 1 second for speeds above 60rpm, and greater than 1 second for speeds between 10 and 60rpm. It uses an LCD display to clearly show the measurement results in five digits. The dimensions are 124（L）x50（W）x33（H）mm, and the weight is only 140g, making it easy to carry and use. The power supply is a 9V battery, and the accessories include a paper box, battery, reflective tape, and user manual.

The tachometer is suitable for a variety of applications, such as in the production, manufacturing, and maintenance of automobiles and motorcycles, where it can be used to measure the speed of engine motors; in the production, manufacturing, and maintenance of home appliances, it can measure the speed of fan motors; and in factories, it can be used to measure the speed of motors, conveyor belts, and other equipment.