Ozon (O3) sensor - Winsen ZE25A

Small, but very interesting O3 digital sensor. Detection range up to 2 ppm with resolution 0.001 ppm (1 ppb).

For now, our knowledge is based on datasheet only. We have tested previous sensor version ZE27-O3, but with resolution 10 ppb is not so interesting to make measurements of atmospheric air.

So, we expect much more from ZE25A-O3, and yes, there is a chance that it will be supported by NAM.

Specification:

• Power suppply: 3.7V - 5.5V (no reverse voltage protection!)
• Working range: 0 - 2 ppm
• Resolution: 0.001 ppm (1 ppb)
• Working temperature: -10°C - 55°C
• Life span: 2 years (in air)
• UART interface

Links:

• Winsen product page: https://www.winsen-sensor.com/product/ze25a-o3.html
• Simple library for ESP8266 written by us: https://github.com/nettigo/winsen-o3

Read more details in attached datasheet.

Set includes:

• Sensor ZE25A-O3
• Connection cable