‌Testo 425 热敏风速仪 产品介绍（中文）‌
Testo 425是一款专业级热敏式风速测量仪器，专为精准测量空气流速、温度和风量而设计，适用于暖通空调（HVAC）系统调试、环境监测、工业设备维护等多种场景。该设备采用热敏探头技术，结合智能算法，可实现快速响应和高精度测量，帮助用户高效完成通风系统优化、室内空气质量评估等任务。

Testo 425的核心优势在于其便携性和多功能性。仪器配备可伸缩探头，支持0至20 m/s的风速测量范围，分辨率达0.01 m/s，确保微小气流的精准捕捉。同时，内置温度传感器可同步测量-20°C至+70°C的环境温度，数据实时显示于高对比度液晶屏，清晰易读。用户还可通过风量计算功能，结合输入截面积参数，直接获取体积流量值，简化复杂场景下的数据分析流程。

仪器的人性化设计进一步提升了操作体验。机身采用防滑材质，符合人体工学握持；探头可通过磁性固定装置吸附于金属表面，解放双手进行多点测量。内置数据存储功能可记录多达500组测量值，支持通过USB或蓝牙（选配）传输至电脑或移动端，便于后续分析或生成报告。此外，低功耗设计和长续航电池保障了连续8小时以上的高强度使用需求。

Testo 425广泛适用于楼宇通风系统检测、洁净室压差监控、工业排风效率评估等场景。其坚固外壳符合IP54防护等级，可应对粉尘、潮湿等复杂环境。搭配可选配件如延长软管或三角支架，可进一步扩展测量场景，满足多样化需求。无论是技术人员现场调试，还是实验室环境研究，Testo 425均能提供可靠数据支持，助力用户提升工作效率。

‌Testo 425 Thermal Anemometer Product Introduction (English)‌
The Testo 425 is a professional-grade thermal anemometer designed for precise measurement of airflow velocity, temperature, and volume flow, ideal for HVAC system commissioning, environmental monitoring, and industrial equipment maintenance. Utilizing advanced thermal probe technology and intelligent algorithms, it delivers rapid response and high accuracy, empowering users to optimize ventilation systems and assess indoor air quality with efficiency.

The Testo 425 excels in portability and versatility. Equipped with an extendable probe, it covers a measurement range of 0 to 20 m/s with a resolution of 0.01 m/s, ensuring precise detection of subtle airflow variations. The integrated temperature sensor supports simultaneous measurements from -20°C to +70°C, with real-time data displayed on a high-contrast LCD screen for instant readability. The volume flow calculation feature further simplifies data analysis by automatically deriving flow rates based on user-input cross-sectional dimensions.

User-centric design enhances operational convenience. The ergonomic housing with anti-slip grip ensures comfortable handling during prolonged use, while the magnetic probe mount allows hands-free fixation on metal surfaces for multi-point measurements. With onboard memory storing up to 500 data sets, users can transfer readings via USB or optional Bluetooth to PCs or mobile devices for report generation. The long-lasting battery provides over 8 hours of continuous operation, meeting demanding field requirements.

Suitable for building ventilation inspections, cleanroom pressure monitoring, and industrial exhaust efficiency evaluations, the Testo 425 boasts a rugged IP54-rated housing resistant to dust and moisture. Optional accessories such as flexible hoses or tripods extend its applicability across diverse scenarios. Whether for on-site technician diagnostics or laboratory research, the Testo 425 delivers reliable data integrity, enabling professionals to achieve higher productivity and informed decision-making.