中文介绍： AZ8351/AZ8361/AZ8371笔式电导率/TDS/盐度计是台湾衡欣公司推出的便携式水质检测仪器，具有多种实用功能和特点。该系列仪器采用笔式设计，便于携带和操作，适合在不同场景下快速测量水质参数。其外壳符合IP65防水标准，能够有效防止灰尘和水溅，确保仪器在潮湿环境中的稳定性。

AZ8351型号主要测量电导率，范围为0~1990μS或0~19.9mS，适用于检测水溶液的导电性。AZ8361型号则专注于测量总溶解固体（TDS），其测量范围为0~1999ppm或0~19.99ppt，能够帮助用户了解水中溶解物质的总量。而AZ8371型号用于测量盐度，范围为1.0~70.0ppt（以氯化钠为基准），适合水产养殖、食品加工等行业。

这三款仪器均具备手动或自动温度补偿功能，能够根据环境温度变化自动调整测量结果，确保测量的准确性。此外，它们还配备了低电量指示、数据锁定功能以及20分钟无操作自动关机功能，方便用户使用。仪器的LCD显示屏可同时显示两种数据，便于用户快速读取。

英文 Introduction: The AZ8351/AZ8361/AZ8371 pen-type conductivity/TDS/salinity meters are portable water quality testing instruments launched by AZ Instrument from Taiwan. They are designed with multiple practical functions and features. The pen-style design of these instruments makes them easy to carry and operate, suitable for quickly measuring water quality parameters in various scenarios. The instruments have an IP65 waterproof housing, which effectively prevents dust and water splashes, ensuring stability in humid environments.

The AZ8351 model mainly measures conductivity, with a range of 0~1990μS or 0~19.9mS, and is suitable for detecting the conductivity of aqueous solutions. The AZ8361 model focuses on measuring total dissolved solids (TDS), with a range of 0~1999ppm or 0~19.99ppt, helping users understand the total amount of dissolved substances in water. The AZ8371 model is used for salinity measurement, with a range of 1.0~70.0ppt (based on sodium chloride), and is suitable for industries such as aquaculture and food processing.

All three models are equipped with manual or automatic temperature compensation functions, which can automatically adjust measurement results according to changes in ambient temperature to ensure accuracy. In addition, they have low battery indicators, data lock functions, and an auto-shutoff feature after 20 minutes of inactivity, making them convenient for users. The LCD display of the instruments can show two types of data simultaneously, facilitating quick reading.