UV紫外线测定辐射计  UV Meter

一、 概述：
　　测量250-400nm波长的紫外光辐射量。
二、参数：
　　1、 测量范围：0 to 200 μmol m-2 s-1
　　2、 灵敏度漂移：每年1%
　　3、 电源：自带标准9V碱性电池
　　8、 电池寿命：200小时

The photon flux of UV radiation (250 to 400 nm) can be expressed as a percentage of the Photosynthetic Photon Flux (PPF; 400 to 700 nm). The unit for both UV and PPF is µmol m-2 s-1. The total photon flux of UV radiation from sunlight is close to 8.5 % of the PPF in sunlight. The photosynthetic photon flux at noon in full sunlight is about 2000 µmol m-2 s-1 and the photon flux of UV radiation is about 170 µmol m-2 s-1. Apogee UV meters and sensors are calibrated in sunlight against a LI-COR spectroradiometer.

Plants use some types of radiation more than others This meter measures the UV radiation between 280 and 315nm and is particularly useful for determining the UV filtering capacity of transpartent plastic and glass barriers that are used below electric lamps. Range is 0 to 200.0 umol m-2s-1(full sunlight). Includes one 9-volt battery.