Thermal Conductivity CO2 Sensor, 0-100%Vol

This thermal conductivity carbon dioxide sensor is a compact gas sensor for wide-range CO2 detection. It supports 0-100%Vol measurement, Exd IIB I explosion-proof design, low-power operation, and stable sensing without catalyst poisoning. Suitable for greenhouses, fermentation systems, industrial gas pipelines, process equipment, and low-oxygen CO2 detection environments.

Feature

• The bridge output voltage of the thermal conductivity CO₂ sensor exhibits linearity with excellent repeatability. The sensor element operates stably and reliably, free from catalyst poisoning, enabling detection in oxygen-free and hypoxic environments.
• The CO₂ sensor has a detection range of 0-100% Vol, suitable for industrial CO₂ concentration monitoring.
• The SUCH thermal conductivity CO₂ gas sensor features a metal housing for excellent durability, operating reliably in harsh environments from -40°C to 70°C and below 95% RH.

Dimension (unit: mm)

Test Circuit

Zero and Sensitivity Stability Curve

In clean air, the absolute value of annual zero drift is less than 2 mV. In 30% CO₂ atmosphere, the absolute value of annual drift is less than 2 mV. For short-term storage (within two weeks), stability is achieved within 8 hours. For long-term storage (one year), 48 hours of aging is required to achieve stability.

Sensor Curve

Response Recovery Curve

Sensitivity Curve