This chapter consists of instructions on how to carry out carbon dioxide measurements.
The results of carbon dioxide measurements are affected by the air pressure and the temperature of the measurement conditions. For achieving the most accurate measurements in high altitudes where the barometric pressure is clearly lower than in the sea level, the actual atmospheric pressure value should be set to GM70. The acceptable pressure value range is 700 … 1300 hPa.
|Before measurements ensure that the air pressure and temperature settings are correct. Set the correct settings as instructed in Setting actual pressure value and unit.|