UV Light Sensor Guide #4306

This is a discussion for the UV Light Sensor Guide. Feel free to connect with the Learning Team here, or to discuss experiment tips, ask questions, leave comments or suggest experiment variations here.

I’m trying to understand UV ratings. Based on Wikipedia, https://en.wikipedia.org/wiki/Ultraviolet_index, it seems there are several wavelengths to measure.

Does this sensor average wavelengths for it’s reading? does it measure specific wavelengths?

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Yes, the UV sensor does sense a range of the spectrum and gives a calculated value that approximates the average. The sensor has varying response to different wavelengths. Here is the responsivity curve and range of wavelengths that this sensor can measure.

Here is the full data sheet for the Space Boards UV sensor ML8511: https://media.digikey.com/pdf/Data%20Sheets/Rohm%20PDFs/ML8511_3-8-13.pdf

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