NDIR-A PNDIR-A PNDIR-A PNDIR-A PNDIR-A Perferferferferformance Daormance Daormance Daormance Daormance Datatatatata

Figure 5

Custom linearisation is not necessary with the IRC-A1. Using universal linearisation constants,repeatability between cells is very good, allowing easier implementation. For an IAQ application, a zero and thensingle calibration at 1,600ppm CO
2 gives the error shown above: less than 2% of reading and typically less than0.5% of reading for six different IRC-A1 cells.

Figure 4

Excellent stability and resolution at 1000ppm CO
2 for the IRC-A1 is achieved by better design, notby using more expensive components.
TTTTTececececechnical Specifhnical Specifhnical Specifhnical Specifhnical Specificaicaicaicaicationtiontiontiontion For further information on the performance of this sensor, on other sensors in the range or any other subject, please contact Alphasense Ltd. For Application Notes visit “www.alphasense.com”. In the interest of continued product improvement, we reserve the right to change design features and specifications without prior notification. The data contained in thisdocument is for guidance only. Alphasense Ltd accepts no liability for any consequential losses, injury or damage resulting from the use of this document or theinformation contained within it ( ©ALPHASENSE LTD ) Doc. Ref. TDS/NDIRA/Issue 001