Indoor Air Quality Assessment Using Low-cost Commercial Off-the-Shelf Sensors

Abstract

Limited representative data sets on CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> concentrations and volatile organic compounds (VOCs) are available for indoor spaces. At the same time, more and more inexpensive and portable measuring systems are being used in air quality studies, which open up new fields of application. It is unclear to what extent the lower measurement precision and long-term stability of the low-cost systems are sufficient to quantify the rather low pollutant concentrations in offices and living spaces. This work reports on test measurements of CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and AQ sensors made by way of example.