Testo 数字湿度计, 最高+70°C, 最大98%RH, ±0.5 + 1 位 °C温度精度, ±2 %RH湿度精度, 608-H2型号

Accurately measure relative air humidity, temperature and dewpoint with this digital hygrometer from Testo. The device has a large liquid-crystal display (LCD) screen to show measured values clearly, and an LED (light-emitting diode) alarm signal alerts you to conditions that require immediate attention so you can react quickly. It's powered by a 9V battery that has a one-year lifespan, so you can use it for a long time before you need to replace the battery. This also means it's portable and simple to use as it doesn't need to be connected to an external power source.

• Quick measuring rate of 18 seconds for accurate real-time measurements
• Light weight of 168g for ease of handling and transportation
• Acrylonitrile butadiene styrene (ABS) housing for durability and impact resistance
•-20 到 +70°C 的宽工作温度范围，非常适合在高温环境中使用

化学实验室
• Storerooms
• 洁净室

A hygrometer measures condensation by passing a current between two plates to test capacitance, which is the ability of an item to retain an electrical charge. As the presence of water increases, the capacitance also increases, allowing the hygrometer to gauge the moisture level.