Comparing Sensors and Filters

Two CO2 sensors from different suppliers located in the same room with sensor S2 very close to human activity. S1 in turquoise uses a 15 minute moving average filter to smooth results, S2 in pink has a very short acting 15 second filter demonstrating much faster response, and larger response due to concentrations of CO2 close to the sensor. In the absence of human activity both sensors track the ambient CO2 level closely.