Gas concentration in the air Digital carbon dioxide sensor FYAD 00-VCO2B200. Range up to 20 % CO2, with digital ALMEMO® plug. • Digital carbon dioxide sensor for concentrations in the percentage range. • Applications in biotechnology, e.g. in bio-incubators and in the food industry, e.g. in cold stores for the storage and transportation of fruit and vegetables. • Robust housing for operation in a wide temperature and humidity range. • Protection of the sensor against contamination with replaceable filter. • All calibration and sensor data are stored in the carbon dioxide sensor. • Temperature compensation of the sensor element with the built-in temperature sensor. • Automatic air pressure compensation with digital air pressure sensor, built into the ALMEMO® connector. • Long-term measurements with ALMEMO® data logger in continuous operation; no sleep mode possible. • 3 measuring channels: Carbon dioxide concentration (compensated with the measured temperature and the measured air pressure), carbon dioxide concentration not compensated (for own compensation in the measuring software with external measured variables temperature and air pressure), air pressure. Technical Data Digital carbon dioxide (CO2) sensor Measuring principle non-dispersive infrared sensor (NDIR) based on silicon, measurement at two wavelengths (ratiometric) Measuring range 0 … 20 % CO2 03/2026 • We reserve the right to make technical changes. Operating conditions -40 … 60 °C, 500 … 1100 mbar compensated (max. 1.5 bar), 0 to 95 % r.H., non-condensing Materials Sensor housing PBT plastic Filter PTFE membrane, PBT plastic grid Dimensions Diameter 25 mm Total length of the sensor: 84 mm without plug Nominal conditions 25 °C, 1013 mbar Sensor connection Temperature dependence Measuring range CO2 compensated at 5 % CO2 ±0.05 % CO2 in range 0 … 50 °C at 0 … 20 % CO2 ±0.045 % of meas. value / °C in range -40 … 60 °C ALMEMO® plug-in connection cable, 1.5 m cable, with digital ALMEMO® plug Air pressure dependence Measuring range CO2 compensated at 5 % CO2 ±0.05 % CO2 in range 700 … 1100 mbar at 0 … 20 % CO2 ±0.015 % of meas. value / mbar in range 500 … 1100 mbar Response time t90 < 1 min with standard filter Warm-up time 4 min after switching on for full accuracy Measuring interval 2 s (current value) Type (including factory test certificate) Built-in connector, digital output Power supply 12 V DC, max. 0.5 W via ALMEMO® plug Digital atmospheric pressure sensor (integrated in ALMEMO® plug) Measuring range 700 … 1100 mbar Accuracy ± 2.5 mbar (23 °C ± 5 K) Digital ALMEMO® plug Refresh rate 2 sec for all channels Supply voltage 12 V DC from the ALMEMO® device Current consumption typ. 40 mA, starting current typ. 120 mA Digital carbon dioxide sensor up to 20 % CO2, with digital ALMEMO® cable plug, integrated digital atmospheric pressure sensor Accredited calibration KY9621D, carbon dioxide concentration, for digital sensor FYAD00VCO2B200, see chapter „Calibration Certificates“. The accredited calibration meets all the require