UV AB measurement

I am trying to get the value of my sun lights (For reptils). I read I have to change them each 6 months because A or B rays get wasted and lose properties (or something like that).

Which sensors do you know for doing that? (cheap, better).

Search for : uv sensor arduino Search on Ebay for : uv sensor

Yeah, I already do that. But I don't know if they meassure UVA or UVB since I don't know anything about their difference... I was looking for a sensor which just meassure A or B if it exists

Search for : uv sensor uva And for : uv sensor uvb Read the datasheets. These are the wavelengths, https://en.wikipedia.org/wiki/Ultraviolet#Subtypes

You have to search for an UV Sensor for a certain Wavelenght if it is for the health of your reptiles

Yeah, I already do that. But I don't know if they meassure UVA or UVB since I don't know anything about their difference... I was looking for a sensor which just meassure A or B if it exists

Yes it is B

Ultraviolet B (UVB) irradiation (285–320?nm) is considered important for metabolic processes and reproduction in many reptile species by facilitating the synthesis of vitamin D3

Turtles also need it to harden there shields and prevent them from fungus types I am searching fur UV sensors too. If I find one matching you needs I post it here...If it is still relevant for you :)

Frank

Sorry for my late answer. I couldn't check it yet. I need the sensor for turtles also, so if you find one, I will be interested in it.