Advanced Photoacoustic NDIR CO? Sensor for Compact Environmental Monitoring
The SCD40-D-R2 from Sensirion is a miniature CO? sensor utilizing innovative photoacoustic non-dispersive infrared (NDIR) technology to provide precise gas measurement in a compact 10.1 × 10.1 × 6.5 mm package. Featuring integrated temperature and humidity sensing, this sensor offers multi-parameter environmental data with excellent contamination resistance and long-term stability, perfectly suited for embedded systems with strict space and power constraints.

Key Benefits:

• CO? Measurement Range: 400 to 2000 ppm (extendable to 5000 ppm) for versatile indoor air quality applications.

• High Accuracy: ±(50 ppm + 5% of reading) ensures reliable readings.

• Integrated Temperature & Humidity: Enables comprehensive environmental monitoring.

• Photoacoustic NDIR Principle: MEMS-based sensor with no traditional optical path for compactness and dust resistance.

• Low Power Consumption: Typical 3.5 mA at 1 measurement per 5 seconds, ideal for battery-powered devices.

• Automatic Self-Calibration (ASC): Minimizes maintenance by adapting calibration automatically.

• Surface-Mount Design: Small footprint simplifies PCB integration.

• Wide Operating Range: Works reliably from -10°C to +60°C.

Applications:

• Smart home devices, air purifiers, thermostats

• HVAC systems for energy-efficient ventilation control

• Indoor air quality monitoring in offices and schools

• Medical and elderly care equipment

• Wearable and portable air quality monitors

Designed to deliver stable, accurate, and low-power environmental sensing, the SCD40-D-R2 helps engineers build smarter, healthier spaces with ease.