UV sensor ranges

Hi, someone know the analogs ranges of this UV sensor? I mean the relation of the analog output with the UV index :confused:

Is there a number on the sensor?
I cannot read the picture well enough

Do you have a link to its datasheet?

No, i bought this sensor as "Analog UV sensor" with this info:

Overview

Output voltage boosts along with the ambient ultraviolet intensity increases
Onboard amplifier circuit with adjustable amplification factor

Specifications

Response spectrum: 200nm-370nm
Dimension: 22.0mm * 16.0mm
Mounting holes size: 2.0mm

Applications

Ultraviolet tester
Outdoor ultraviolet detector
Germicidal lamp

How to Use

In the case of working with a MCU:

VCC ↔ 3.3V ~ 5.0V
GND ↔ power supply ground
AOUT ↔ MCU.IO (analog output)

website?

robtillaart:
website?

If you look at the pictures at amazon, you see it is a resell of waveshare.com

1 google and I found that company website.

Searching for the UV sensor there gave me one hit (yes yours) and on that page was a link to a wiki

The link to the wiki is - https://www.waveshare.com/wiki/UV_Sensor

And it contains a user manual PDF which I didn't read yet but may contain the answer.

Also schematic - https://www.waveshare.com/w/upload/3/31/UV-Sensor-Schematic.pdf

whcih shows the sensor is just a diode if I am correct.

And this - https://www.waveshare.com/w/upload/a/ad/GUVA-S12SD.pdf

This sensor measures UV alone. The cut off wavelength is bellow VIS - which is OK.

The UV index has to be computed.

The last page of the datasheet describes the calibration method. Which I found a bit laborious, for me.

As for demonstration (or qualitative) purpose, I suggest exposing the sensor to the day light in a moment you know the UV exposure from the Meteo broadcast.

Alternatively, you can define "Conventional units" by exposing the sensor to a UV diode placed at different distances and log the output. The tricky thing may be (I am not sure, however) the fact that the energy decreases by the square of the distance.

I would discourage anyway using this sensor to measure UV index for sunbathing.

DonΒ΄t cross post

Spanish topic blocked and then will be removed.

robtillaart:
Also schematic - https://www.waveshare.com/w/upload/3/31/UV-Sensor-Schematic.pdf

whcih shows the sensor is just a diode if I am correct.

And this - https://www.waveshare.com/w/upload/a/ad/GUVA-S12SD.pdf

Ok thank you.

falexandru:
This sensor measures UV alone. The cut off wavelength is bellow VIS - which is OK.

The UV index has to be computed.

The last page of the datasheet describes the calibration method. Which I found a bit laborious, for me.

As for demonstration (or qualitative) purpose, I suggest exposing the sensor to the day light in a moment you know the UV exposure from the Meteo broadcast.

Alternatively, you can define "Conventional units" by exposing the sensor to a UV diode placed at different distances and log the output. The tricky thing may be (I am not sure, however) the fact that the energy decreases by the square of the distance.

I would discourage anyway using this sensor to measure UV index for sunbathing.

Ok i will try this and post the results.