How frequently does the ENose record the sensor resistance?
We record resistance one time every 20 seconds, or 3 times a minute. We chose this frequency because it gives us a good picture of the air without filling our computer memory too fast. There are many other ways this could be done. For example, we could take one point every minute, then when we see a change, take points more frequently until we understand the change. This approach could save power or make a battery powered system run much longer.