TFCO201 - Airborne CO2 Concentration Sensor
The TFCO201 sensor measures carbon dioxide (CO2) concentrations in airborne applications. It supports integration with UAVs and can be used with a Pixhawk autopilot system or as a part of the TF-ATMON monitoring system.
This sensor uses the SCD41 CO2 sensor for high-accuracy measurements and includes additional environmental data such as temperature and humidity.
Features
- CO2 measurement range: 400 – 5000 ppm
- Accuracy: ±(40 ppm + 5 % of reading) for CO2
- Humidity range: 0% to 100% RH
- Temperature range: -10°C to 60°C
- Communication Interface: I2C with address 0x62
- Power supply: 3.6V to 5.4V
- Low power consumption: Supports low power periodic measurements
- Compact size: 30 x 15 x 6.5 mm (PCB only without housing)
Applications
- Atmospheric sounding: Ideal for direct measurements in atmospheric research via UAVs.
- Urban air quality monitoring: Helps locate and map sources of CO2 emissions.
- Ecosystem change observation: Suitable for tracking CO2 levels in various ecosystems.
- Industrial emission control: Monitor CO2 emissions from industrial facilities.
Sensor Parameters
| Parameter | Value | Notes |
|---|---|---|
| CO2 Sensor Model | SCD41 | Other supported sensors: SCD40, SCD42 |
| CO2 Accuracy | ± (40 ppm + 5% of reading) | Measurement range: 400 – 5000 ppm |
| Humidity Measurement Range | 0% – 100% RH | |
| Temperature Accuracy | ± 1.5 °C | Temperature range: -10 °C to 60 °C |
| Operating Voltage | 3.6 – 5.4V | Internal overvoltage protection |
| Interface | I2C (0x62) | Supports I2C address modification |
| Mass | 3 g | Without cabling |
| Dimensions | 30 x 15 x 6.5 mm | PCB size |
| Weather Resistance | IP40 | External connectors fully occupied |
Usage Instructions
The sensor can be integrated directly with UAV systems. The PX4 autopilot supports it and allows real-time data logging and communication with the ground station. For extended usage scenarios and system setup, refer to the sensor’s GitHub repository.
Installation & Calibration
- I2C Address Setup: Default address is 0x62, which can be translated using the TFI2CADT01 module.
- Temperature Offset: The sensor supports temperature offset configuration to improve accuracy.
Schematics
Datasheet Reference
For more detailed technical specifications of the CO2 sensor used, refer to the Sensirion SCD41 Datasheet.