PERFORMANCE Sensitivity mV/decade concentration change (0.5% to 5% CO2) 6 to 10 Response time t90 (s) for mV change (20oC)(0.5% to 5% CO2) 2-4 mins Zero E0 @ 5000ppm CO2 -30 to +30mV Resolution RMS noise (ppm equivalent) @ 5,000ppm CO2 100 Range CO2 concentration 0.2% to 95% Linearity see Figure 3 Logarithmic LIFETIME Zero drift (mV)E0 change/day in lab air ±3 Sensitivity drift mV/decade/month change in lab air, monthly test <1 Operating life months until 80% original signal (24 month warranted) >24 ENVIRONMENTAL Temperature range °C 10 to 35oC Pressure range kPa 80 to 120 Humidity range % rh continuous 15 to 95 KEY SPECIFICATIONS Storage period months @ 0 to 20°C (stored in original container) 6 Input Impedance of op amp input >108 Ù Technical Specification Figure 1 CO2-D1 Schematic Diagram Top View Bottom View Side View PATENTED Alphasense Ltd, Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. CM77 7AA. UK Telephone: +44 (0) 1376 556 700 Fax: +44 (0) 1376 335 899 E-mail: [email protected] Website: www.alphasense.com NOTE: all sensors are tested at ambient environmental conditions, with 10 ohm load resistor, unless otherwise stated. As applications of use are outside our control, the information provided is given without legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their own requirements. All dimensions in millimetres (± 0.1mm) CO2-D1 Carbon Dioxide Sensor Solid State At the end of the product’s life, do not dispose of any electronic sensor, component or instrument in the domestic waste, but contact the instrument manufacturer, Alphasense or its distributor for disposal instructions.

-20 -15 -10 -5 0 5 10 15 20 2 2.5 3 3.5 4 4.5 5 5.5 6 10C 20C 40C -25 -20 -15 -10 -5 0 1500 2500 3500 4500 5500 6500 7500 Technical Specification CO2-D1 Performance Data Figure 2 Mastercurve Figure 3 Hysteresis In the interest of continued product improvement, we reserve the right to change design features and specifications without prior notification. The data contained in this document is for guidance only. Alphasense Ltd accepts no liability for any consequential losses, injury or damage resulting from the use of this document or the information contained within. ( ©ALPHASENSE LTD ) Doc. Ref....