Analog UV Light Sensor Breakout - GUVA-S12SD

Item number P1918 Brand Adafruit Model 1918 Share
Analog UV Light Sensor Breakout - GUVA-S12SD


Extend your light-sensing spectrum with this analog UV sensor module. It uses a UV photodiode, which can detect the 240-370nm range of light (which covers UVB and most of UVA spectrum). The signal level from the photodiode is very small, in the nano-ampere level, so we tossed on an opamp to amplify the signal to a more manageable volt-level.

This sensor is much simpler than our Si1145 breakout, it only does one thing and gives an analog voltage output instead of requiring a complicated I2C setup procedure. This makes it better for simple projects. It also has a 'true' UV sensor instead of a calibrated light-sensor. To use, power the sensor and op-amp by connecting V+ to 2.7-5.5VDC and GND to power ground. Then read the analog signal from the OUT pin. The output voltage is: Vo = 4.3 * Diode-Current-in-uA. So if the photocurrent is 1uA (9 mW/cm^2), the output voltage is 4.3V. You can also convert the voltage to UV Index by dividing the output voltage by 0.1V. So if the output voltage is 0.5V, the UV Index is about 5.


Brand information
Brand Adafruit
€ 10,55€ 8,70 Excl. VAT (NL)
Expected delivery date: Tuesday 21 May. ... pieces in stock
Shipped from € 3,50 (NL) 30 days cooling-off Excellent service
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Q Belgium Louis De CosterHow much measuring load can this sensor handle? How much current can the unit deliver without affecting the measurement? Answer this question

Customer Reviews

The Netherlands
No, no negatives.
This is very suitable as a UV sensor in my Davis weather station. Place this sensor waterproof in a glass test tube, which simply allows UV light to pass through. Can simply be connected instead of the original sensor (a 350 Euro)
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The Netherlands
Simple assembly Sensitive
I use this sensor, mounted in a quartz glass test tube, as an alternative to the Davis 6490 UV sensor for my Davis Pro-2 weather station. Can be connected directly to the transmitter unit. Works fine, and is about 50x cheaper than the original! Make sure you have a watertight setup!
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