以下是日本奥普士PT-303手持式测温仪/PT303的产品中英文介绍：

日本奥普士PT-303手持式测温仪是一款设计精巧、功能实用的非接触式测温工具。其采用口袋型设计，便于携带，重量仅为200g，尺寸为160mm×52mm×32mm，轻松放入工具包或口袋中，随时随地满足测温需求。该测温仪测量范围广泛，可达-20℃～400℃，能够适应多种不同温度环境下的测量任务。其红外波长为8～14um，测定区域范围为D:S=30:1，瞄准方式为同轴激光，可精准定位测量目标，即使在较远距离也能准确测量物体表面温度，反应速度为800ms/90%，0.8秒即可测出温度值，测量精度为±1％或±2℃，分辨率可达1℃/℉单位，确保测量结果的准确性与可靠性。此外，它还具备背景灯光设计，便于在黑暗处读取测量数值，电池省电功能可使设备在约10秒后自动断电，有效延长电池寿命，使用环境温度为0～50℃，使用环境湿度为35～85％RH，储存温度为-20～70℃，适应多种环境条件。其应用场景广泛，可用于变电站电气热故障检测、造纸印刷行业温度检测、石油化工企业温度检测、塑料橡胶行业温度检测以及工业领域机械热故障检测等，是工业生产、设备维护、质量检测等领域不可或缺的实用工具。

The Japanese OPTEX PT-303 handheld thermometer is an ingeniously designed, highly practical non-contact temperature measuring tool. It features a pocket-sized design, making it extremely portable with a weight of only 200g and dimensions of 160mm×52mm×32mm. This allows it to be easily carried in a tool bag or pocket, ready to meet temperature measurement needs anytime and anywhere. The thermometer boasts a wide measurement range of -20℃～400℃, capable of handling temperature measurement tasks in various environments. With an infrared wavelength of 8～14um, a measurement spot size ratio of D:S=30:1, and coaxial laser aiming, it can accurately target the measurement object. Even at a considerable distance, it can precisely measure the surface temperature of objects. The response speed is 800ms/90%, and it can provide temperature readings in just 0.8 seconds. The measurement accuracy is ±1％or ±2℃, and the resolution is 1℃/℉, ensuring the accuracy and reliability of the measurement results. Additionally, it is equipped with a backlight design for easy reading in the dark, and a power-saving function that automatically turns off the device after about 10 seconds to extend battery life. The operating environment temperature is 0～50℃, the operating environment humidity is 35～85％RH, and the storage temperature is -20～70℃, making it adaptable to a variety of environmental conditions. The PT-303 has a wide range of applications, including electrical thermal fault detection in substations, temperature measurement in the paper and printing industry, temperature measurement in petrochemical enterprises, temperature measurement in the plastic and rubber industry, and mechanical thermal fault detection in the industrial field. It is an indispensable tool in industrial production, equipment maintenance, and quality inspection.