S12SD 200-370nm UV Detection Sensor Module Light Sensor for Arduino - Optimize Your Search! Review

Although UVC detection is not the purpose of this board, it can detect almost UVC, all UVB and most UVA. B and A do not have a great germicidal effect, but UVC does. If you have a UV lamp that looks like a transparent fluorescent lamp, it probably emits light around 254nm. The optimal UVC wavelength is around 264nm, so UVC tube light isn't perfect, but it's close. I think UVC LEDs emit around 260nm but they are pretty weak and each chip is pretty expensive. So if you have a cheap corncob LED…

So far it works as tested on all fake UV LED crap on the net. Very easy to set up. I used a USB cable, cut off the end and used it to power the board. I ran 2 short jumper wires from the board so I can connect the DVM. If it is a true UV LED it will get 5 volts DC in output or signal. Once you have 5 volts DC, place a mug or piece of glass between the source and this circuit board. If the voltage drops sharply then you have a legitimate UV-C source as glass or plastic will block it. Quartz will

Amplifier gain saturates the output (5V supply) with less than 20nA from the photodiode. The diode specs show that 1mW/cm^2 should produce about 110 nanoamps. This makes the maximum value of the sensor about 1/6 mW/cm^2 (if the diode output is reasonably linear). With the calculated gain of the current amplifier and the transconductance amplifier, the dark current is actually about 1 nanoamp as shown in the datasheet. The sales figures also imply that the amplifier can be used as a UV index…