INTRODUCTION
The concentration of carbon dioxide (0.03% usuallly) is related to daily life. Recently, there’s a study showing that the atmospheric CO2 content has reached 0.0385% (385 ppm) which is the highest value since 2.1 million years. The raise of atmospheric CO2 content to some extent results in global climate change. How to accurately measure the carbon dioxide gas concentration is becoming a universal research topic.
DFRobot released its latest high-precision analog infrared arduino CO2 sensor. The effectively measuring range is from 0 to 5000ppm. This sensor is based on non-dispersive infrared (NDIR) technology and has good selectivity and oxygen-free dependency. Besides, its service life could up to 5 years! It integrates temperature compensation and support DAC output. Most importantly, the product is easy to use; it is compatible with all types of microcontrollers such as Arduino with ADC function.
In addition, this Gravity: Analog Infrared CO2 Sensor For Arduino (0~5000 ppm) is a high-performance sensor that combines technology of mature infrared absorption gas detection with precision optical circuit design as well as sophisticated circuit design. It has characteristics such as high sensitivity, high resolution, low power consumption, fast response, anti-water vapor interference, no poisoning, high stability and long life.
This Gravity: Analog Infrared CO2 Sensor is able to directly compatible with the DFRobot Arduino IO expansion board thanks to its external DFRobot Gravity interface. This character simplify the use of the sensor as it is plug and play and no need additional wiring.
This CO2 Sensor could be widely used in HVAC, indoor air quality monitoring, industrial process and security protection monitoring, agriculture and animal husbandry production process monitoring.
DFRobot provides detailed tutorials and code, please check the product wiki.
DFRobot LCD Keypad Shield with Infrared Co2 Sensor
This is a 0~5000ppm CO2 sensor with analog output. It supports Arduino and other microcontrollers with ADC function. In addition, we also have a 0~50000 ppm wide range infrared sensor with Gravity UART interface, Compatible with Arduino, Raspberry Pi and other microcontrollers: Gravity: UART Infrared CO2 Sensor (0~50000ppm).
Analog Infrared CO2 Sensor For Arduino Tutorial:
ESP32 Arduino: Using an infrared CO2 sensor
ESP32 Arduino: Temperature, humidity and CO2 concentration web server
| Gravity CO2 Sensor Selection Guide | |||
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| Product Name | Gravity：Analog Electrochemistry CO2 Sensor | Gravity：Analog IR CO2 Sensor | Gravity：UART IR CO2 Sensor |
| SKU | SEN0159 | SEN0219 | SEN0220 |
| Operation Voltage | 3.7～5V | 4.5～5.5V | 4.5～5.5V |
| Output |
Gravity: Analog
(Analog2.7～4.1V)
+
3P Header Digital Output(Alarm):0～VCC Level
|
Gravity: Analog
(Analog Output 0.4～2V)
|
Gravity: UART
(0～3.3V Level)
|
| Measurement Principle |
Electrochemistry
（Solid electrolyte battery principle）
|
NDIR(non-dispersive infrared) | NDIR(non-dispersive infrared) |
| Measurement Range | 0～10000 ppm | 0～5000 ppm | 0～50000 ppm |
| Accuracy | ±100ppm@400ppm | ±(100ppm + 6% readings) | ±(100ppm + 6% readings) |
| Response Time | <20s | <90s | <30s |
| Average Power | <1W | <430mW@5V | <430mW@5V |
| Operation Temperature | -20℃～50℃ | 0℃～50℃ | 0℃～50℃ |
| Operation Humidity | 0～95% RH (No condensation) | 0～95% RH (No condensation) | 0～95% RH (No condensation) |
| Lifespan | >1 years | >5 years | >5 years |
|
Dimension
(PCB)
|
32*42 mm | 37*69 mm | 21*27.1 mm |
| Features |
1.Large Range
2.Adjustable Alarm Threshold
3.Fast Response
4.Analog Output
|
1.High Accuracy
2.Long Lifespan
3.Auto Temperature Compensation
4.Water Vapor Interference Resistance
5.Ananglog Output
|
1.High Accuracy
2.Large Range
3.Long Lifespan
4.Auto Temperature Compensation
5.Water Vapor Interference Resistance
6.3.3V UART Output
|
FEATURES
SPECIFICATION
DOCUMENTS
SHIPPING LIST
TUTORIAL
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ESP32 Arduino: Temperature, humidity and CO2 concentration web server2018-06-11 08:41:50