The Carbon Dioxide Meter of the PCE-PQC 2xEU series measures particle sizes from 0.3 μm to 25 μm with mass concentration and additionally stores the parameters temperature, relative humidity, CO2 and TVOC (PCE-PQC 23EU only). This meter is the most versatile air quality monitor available with advanced power management and the industry's first sleep mode, enabling battery operation for periods that can exceed one month with a single charge. The PCE-PQC 2xEU series can be used as a stand-alone, battery-powered instrument or simply integrated into a building automation and plant monitoring system via Ethernet, USB.

The air quality monitor PCE-PQC 2xEU series can measure not only the measurement of particle sizes and mass concentrations but also the carbon dioxide content in the air. Furthermore, the air temperature and the relative humidity are measured. The air quality monitor PCE-PQC 23EU also has a photoionization detector (PID), which can be used for the measurement of volatile hydrocarbons (VOC's).