I'm trying to make a ventilator. One of the main functions is to measure oxygen level present in air flow through the ventilator pipe, for that I bought a medical O2 sensor.
Looks like this
The sensor has three pins. As per the datasheet the pins are mentioned as 1(+), 2(-), 3 (-).
I contacted the dealer and asked about interface of the sensor to controller, he didn't reply properly. Still I have this doubt how to interface with the controller.
If anybody knows how to do it? please reply for this post. Thank for reading