New gas concentration sensor for CO2 measurements in high-volume applications

The Sensirion STC31-C is a new gas concentration sensor for measuring high-range CO2 concentrations. It is especially suited for high-volume applications in transporting and storing perishable and pharmaceutical goods and for breath analysers for measuring and monitoring CO2 in human breath.

This gas concentration sensor is based on a revolutionary principle for measuring thermal conductivity and offers extremely high repeatability and long-term stability. It is small, measures accurately and reliably, and outputs a digital and fully calibrated signal for gas concentration and temperature. The sensor also impresses with its low power consumption and low cross-sensitivity to humidity and oxygen changes.

The device is the successor to the STC31 but has an added low-cross-sensitivity measurement mode. This mode provides very low cross-sensitivity to changes in humidity and oxygen concentration, allowing measurements of human breath. Otherwise, it impresses with the same features as its predecessor and is ideal for measuring high-range CO2 concentrations in high-volume applications.

The sensor's outstanding performance is based on the company's patented CMOSens technology, which combines the sensor element and signal processing on a single tiny chip. The proven CMOS technology is ideal for demanding and cost-sensitive OEM applications in mass production.

The company also offers an evaluation kit, the SEK-STC31-C, for initial tests and quick and easy evaluation of the sensor.