SCD40
CO₂ accuracy of ±(50 ppm + 5% MV) @400-2000 ppm
<p>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.</p><p> </p><p>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.</p>
Specification
| CO₂ | |||
|---|---|---|---|
| Measurement range
400 - 2000
| 400 - 2000 | ppm | |
| Accuracy: Baseline
±50
| ±50 | ppm | |
| Accuracy: Linearity
±5.0%MV
| ±5.0%MV | ppm | |
| 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 | |
| Interfaces
I²C
| I²C | ||
| Size (LxWxH)
10.1 x 10.1 x 6.5
| 10.1 x 10.1 x 6.5 | mm³ | |
| Packaging size
60 and 600
| 60 and 600 | pcs (T&R) |
| Temperature | |||
|---|---|---|---|
| Typ. temperature accuracy
0.8
| 0.8 | °C | |
| Operating temperature range [°C]
-10 - 60
| -10 - 60 | °C | |
| Response time (τ63%)
120
| 120 | s |
Downloads
Sensor evaluation
Buy the following products to evaluate this sensor
| Name | Description | Series | Category |
|---|---|---|---|
 SEK-SCD41 | CO₂ evaluation kit SCD4x series | SEK-SCDxx | CO₂ |
 SEK-SensorBridge | Connecting bridge with two sensor ports | SEK-SensorBridge |
Download the respective viewer software to start measuring
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