AQ COMFORT Instruction & Operations Manual
Version 1.01
Page 14 of 44
1. ELECTROCHEMICAL SENSORS
All electrochemical sensors are mounted on fitted socket fittings for easy installation and
removal.
The electrochemical sensor is described here:
Carbon Monoxide sensor (CO)
This is also a three electrode sensor that responds to carbon monoxide. It is equipped
with an inboard filter to remove any interference from other acidic gases.
2. NDIR (INFRARED) SENSOR (CO2)
A non-dispersive infrared (or NDIR) sensor is a simple spectroscopic device most
commonly used to measure CO
2
in indoor air quality applications. The main
components are an infrared source (lamp), a sample chamber or light tube, a
wavelength sample chamber, and the CO
2
gas concentration is measured electro-
optically by its absorption of a specific wavelength in the infrared (IR).
The AQ Comfort Air Quality Monitor is equipped with one standard NDIR infrared
sensor capable of CO
2
measurement (standard range: 0 – 5000 ppm).
