Hello! I want to build a DIY uvb/uva reader to check the UV intensity in my reptile enclosures. I'd love if anyone had suggestions for the most accurate UVB/UVA sensor available?
You need to set a dollar value; professional units will typically cost hundreds to thousands, while amateur units will be under $100. Also, the amateur units will be much less accurate. You also did not state what hardware you want to connect the sensor to. Only Arduino, or all the boards we deal with, like ESP32 and RP2040, plus a few more.
I would recommend the VEML6075 from Adafruit. It measures UVA and UVB, is easily connected via I2C bus and can be had for under $10USD i breakout form a bit more for a board.
It would be more sensible to first decide what accuracy you actually need.
Check the AS7331 UVA/B/C sensor data sheet for the specs.
Good suggestion, thank you!
We need a lot more information, how big is it, what are the sources of UV, Approximate what hours will it be active. What is the environment? Are there any legal restrictions etc?
We realize a sensor by it self is useless, you will need to connect to a computer or controller. What would you want that controller to do?
@sonofcy Has given you some good advice and needs an answer.
Something to bear in mind: if you want to cover the sensor(s) for protection, this can be difficult because most glass and clear plastics like perspex/acrylic are not transparent at UV wavelengths, so could severely affect the readings.
Another thought: some sensors that are called UV sensors are not truly UV sensors. They measure visible light and estimate how much UV would be present assuming that the source is sunlight. These might not work so well in artifical environments.