Sensirion STC31-C-R3 CO2 Concentration Sensor 0-100% vol - I2C Output
The Sensirion STC31-C-R3 is a high-precision thermal conductivity CO₂ sensor module with a 0–100% vol measurement range, featuring a digital I2C interface for seamless integration with microcontrollers like Arduino, Raspberry Pi, ESP32, and industrial PLCs.
Features
- Measures COâ‚‚ concentration from 0 to 100% by volume using thermal conductivity principle.
- Digital I2C interface supports Standard, Fast, and Fast-Mode Plus communication.
- Features dual measurement modes: low-noise and low-cross-sensitivity for optimized performance.
- Supports Automatic Self-Calibration (ASC) and Forced Recalibration (FRC) for long-term accuracy.
- Compact SMD package measuring 10.0 x 10.5 mm with a weight of only 0.025g.
Out of stock
The STC31-C-R3 from Sensirion is a MEMS-based thermal conductivity sensor engineered for precise measurement of carbon dioxide concentrations across a full 0–100% volume range in air or nitrogen backgrounds. Its operation relies on the change in thermal conductivity of a gas mixture relative to its CO₂ content, providing a stable and direct reading without the need for optical components.
The module includes advanced on-chip signal conditioning and offers two selectable measurement modes to prioritize either low-noise operation or reduced cross-sensitivity to other gases. For maximum accuracy across varying conditions, the sensor algorithm compensates for environmental influences using externally supplied temperature, humidity, and pressure data. Each unit is individually factory calibrated and carries a unique serial number, ensuring traceability and consistent performance for critical medical, industrial, and environmental monitoring applications.
Additional Information
| Weight | 0.000025 kg |
|---|---|
| Dimensions | 1 × 1.05 cm |
