How to Connect an Electrical Conductivity Sensor to a Raspberry Pi

by | May 23, 2016

If you have a saltwater pool and are using a chlorinator to provide most of the chlorine then knowing the amount of dissolved salt in the water is crucial to maintaining the health and safety of your pool.

Electrical Conductivity sensors provide a reading in micro-siemens, which is a measure of conductance (as opposed to resistance).  Using this we can calculate a salinity reading in parts per million(ppm).

The Atlas Scientific Electrical Conductivity sensor is an industrial grade sensor that works well with the Raspberry Pi, it is fully submersible up to the BNC connector in saltwater. The sensor can work in serial or via the I2C protocol, for this project you will be configuring the sensor to use the I2C interface on the Pi.<