AO-CO2-M/A Multifunctional Air Quality Sensor (CO2, mixed gas VOC), with display

• CO2: 0-2000/5000/10000 ppm
• VOC: 0-100%
• Relative Humidity: 0-100%
• Temperature: -30...+70°C/-20...+80°C/0...+50°C/0... +100°C
• Air pressure: 750...1150 mbar
• Output (select Output Type): 0-10 V or 4-20 mA
• Alarma relay output
• Protection Type IP65

The multifunctional air quality sensor AO-CO2-M/A measures the CO2 concentration in the ambient air in the range of 0-10000 ppm (NDIR), mixed gas VOC in the range of 0...100% based on the calibration gas, the temperature and optionally the relative humidity, absolute humidity, mixing ratio or the dew point temperature of the ambient air.

The transducer converts the respective measurement results for further processing into a linear output signal 0-10 V or 4-20 mA. Furthermore, the device has a potential-free changeover contact. For which measured value this output is used, can be set individually by innovative DIP switch technology.
The CO2 concentration is measured by a non-dispersive infrared sensor (NDIR). There are 3 different CO2 scales (0-2000 ppm, 0-5000 ppm, 0-10000 ppm) to choose from, which can be switched as required by innovative DIP switch technology.
The relative humidity and temperature is measured by a capacitive humidity sensor. There are 4 different temperature ranges (-30...+70°C, -20...+80°C, 0...+50°C, 0...+100°C) as well as 4 different humidity measurement category (% r.H., g/m³, g/kg, TP °C) to choose from, which can be switched as required by innovative DIP switch technology.
The CO2 and VOC zero point adjustment in response to the current environmental conditions can be started manual on the device at any time. The multifunctional air quality sensor starts in regular intervals an automatic re-calibration procedure, whereby a long-term stable CO2 and VOC measurement is ensured.