Highly Compact multi-Spectral non-Dispersive Infrared Gas Sensor for large-Scale Deployment: K96 Sensor Core Concept.

This paper presents a novel low-cost & multi-gas non-dispersive infrared (NDIR) gas sensing platform with sub-ppm detection capabilities, targeting environmental monitoring of greenhouse gases. The design of the NDIR sensor combines highest-compactness and low-power consumption, with a unique multi-channel optical cell design, featuring the detection of up to three different gases, simultaneously. Our flexible sensor platform allows a customer specific selection of the target gases, making the sensor adaptable towards a variety gas monitoring scenarios. We verify our concept by the detection of multiple selective gases, such as CO2, CH4 and H2O. The embedded calibration model includes temperature stabilization and addresses in real-time any cross-sensitivity between the NDIR gas sensing channels. This novel versatile platform offers both, high stability, and high precision (<0.1 ppm for CO2, <0.5 ppm for CH4). The sensor aims for medium to high volumes at reasonable costs, addressing the increasing need for cost-effective gas sensing solutions in the domain of environmental gas monitoring.