The UVA sensor BT90i measures the intensity of ultraviolet radiation. This sensor consists of a broadband UV sensitive Schottky photodiode and responds primarily to UVA radiation.

Range: 220 ... 390 nm
 

Can be used to:
• measure the UVA transmittance of various sunglasses and regular glasses,
• measure the UVA intensity as a function of time throughout the day,
• measure the UVA transmittance of fabrics, both wet and dry.