The CAPNOS is a compact, mobile capnograph for ambulances, day-surgeries and clinical environments. The unit continuously monitors the expiratory carbon dioxide concentration and the respiration rate of a patient. The CO2 values are shown in mmHg, kPa, or in Vol%. Because of the sidestream system, the CAPNOS can be used on intubated as well as on non-intubated patients. Compared to any other capnograph, the CAPNOS is a very lightweight solution. The high-end pneumatics work quietly, without disturbing patient or user.