Lines Matching refs:ppm
59 * needs fairly precise calibration at 400ppm and 1000ppm to return
95 * voltage you get when at CO2 concentrations of 400ppm (ambient)
96 * and 1000ppm using the getReferenceVoltage() method. Then
99 * @param ppm400 The measured reference voltage at 400 ppm
100 * @param ppm40000 The measured reference voltage at 1000 ppm
112 * Returns the computed CO2 concentration in ppm (Parts Per
114 * is greater than the ppm400 value. Essentially, ppm values
117 * @return The computed CO2 concentration in ppm
119 float ppm();
