SCD40
CO₂ accuracy of ±(50 ppm + 5% MV) @400-2000 ppm
The SCD4x is Sensirion’s next generation miniature CO2 sensor. This sensor builds on the photoacoustic NDIR sensing principle and Sensirion’s patented PASens® and CMOSens® technology to offer high accuracy at an unmatched price and smallest form factor. SMD assembly allows cost- and space-effective integration of the sensor combined with maximal freedom of design. On-chip signal compensation is realized with the built-in SHT4x humidity and temperature sensor. Tape and reel packaging make the SCD4x ideal for high-volume applications.
CO2 is a key indicator for indoor air quality (IAQ) as high levels compromise humans’ cognitive performance and well-being. The SCD4x enables smart ventilation systems to regulate ventilation in the most energy-efficient and human-friendly way. Moreover, indoor air quality monitors and other connected devices based on the SCD4x can help maintain low CO2 concentration for a healthy, productive environment.
Specification
| CO₂ | |||
|---|---|---|---|
| CO₂ Output Range 0 - 40000 | 0 - 40000 | ppm | |
| Specified CO₂ Measurement Range 400 - 2000 | 400 - 2000 | ppm | |
| Accuracy ±50.0 ppm ±5.0 %m.v. | ±50.0 ppm ±5.0 %m.v. | ||
| Response time (τ63%) 60 | 60 | s |
| Humidity | |||
|---|---|---|---|
| Typ. relative humidity accuracy 6 | 6 | %RH | |
| Operating relative humidity range 0 - 95 | 0 - 95 | %RH | |
| Response time (τ63%) 90 | 90 | s | |
| Calibration certificate Factory calibration | Factory calibration |
| Generic | |||
|---|---|---|---|
| Supply voltage 2.4 - 5.5 | 2.4 - 5.5 | V | |
| Average supply current 15 | 15 | mA | |
| Max. supply current 205 | 205 | mA | |
| Operating temperature range [°C] -10 - 60 | -10 - 60 | °C | |
| Interfaces I²C | I²C | ||
| Size (LxWxH) 10.1 x 10.1 x 6.5 | 10.1 x 10.1 x 6.5 | mm | |
| Packaging size 60 and 600 | 60 and 600 | pcs (T&R) |
| Temperature | |||
|---|---|---|---|
| Typ. temperature accuracy 0.8 | 0.8 | °C | |
| Response time (τ63%) 120 | 120 | s |
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