Sauermann AQ110S - Air Quality Meter, Carbon Dioxide

• Measuring range: CO₂: 0 to 5000 ppm and temperature: -20 to +80°C
• 6.5" (2m) cable (0 to 5000 ppm and 0 + 50 Degrees C)
• 2-line display

The Sauermann AQ110S Air Quality Meter measures the level of carbon dioxide (CO₂) present in ambient air. This portable CO₂ meter includes a temperature remote probe, 6.5" (2m) cable, and features functions such as Hold, Min, Max, backlight, change of unit, and configurable automatic switch-off. The AQ110S is supplied with a soft case and adjustment certificate.

Operating principles

All the gases absorb the light at a specific wavelength, a part of the light emitted by the infrared source is absorbed by the gas sample. The quantity of light read by the infrared sensor is inversely proportional to the CO2 concentration.

Negative temperature coefficient probes are thermistors with a resistance that decreases with temperature according to the equation below:

RT = resistance sensor value at temperature T
R(T₀) = resistance sensor value at reference temperature T₀
T and T₀  in °C
α and T₀ sensor specific constant