Gravity: UART Infrared Carbon Dioxide Sensor (0-50000 ppm)

DFRobot released its latest wide range Arduino infrared CO2 sensor, which effective range is up to 0~50000ppm. This sensor is based on non-dispersive infrared (NDIR) technology and has good selectivity and oxygen-free dependency. It integrates temperature compensation and support UART communication mode. Most importantly, the product is easy to use; it is compatible with all types of microcontrollers with UART port, like Arduino, Raspberry Pi and other microcontrollers. Besides, it has a long service life, up to 5 years!

In addition, this UART Infrared CO2 Sensor 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 wide range detection, high sensitivity, high resolution, low power consumption, fast response, anti-water vapor interference, no poisoning, high stability and long life.

It can be widely used in HVAC refrigeration and indoor air quality monitoring, industrial process and safety monitoring, agricultural and animal husbandry production process monitoring, etc..

This is a 0~50000ppm wide-range CO2 sensor with UART communication port. It supports Arduino, Raspberry Pi, and other microcontrollers. In addition, we also have a 0~5000 ppm high precision infrared sensor with Gravity Analog interface, more easy to use: Gravity Analog Infrared CO2 Sensor (0~5000ppm).

Gravity CO2 Sensor Selection Guide
Product Name	Gravity: Analog Electrochemistry CO2 Sensor	Gravity: Analog IR CO2 Sensor	Gravity: UART IR CO2 Sensor	Gravity: I2C SCD41 Infrared CO2 Sensor (400 - 5000 ppm)
SKU	SEN0159	SEN0219	SEN0220	SEN0536
Operation Voltage	3.7～5V	4.5～5.5V	4.5～5.5V	3.3V-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)	Gravity: I2C
Measurement Principle	Electrochemistry （Solid electrolyte battery principle）	NDIR (non-dispersive infrared)	NDIR (non-dispersive infrared)	photoacoustic NDIR
Measurement Range	0～10000 ppm	400～5000 ppm	0～50000 ppm	400～5000ppm
Accuracy	±100ppm@400ppm	±(100ppm + 6% readings)	±(100ppm + 6% readings)	±(40 ppm + 5% MV)
Response  Time	<20s	<90s	<30s	60S
Average  Power	<1W	<430mW@5V	<430mW@5V	<30mW@5V
Operation Temperature	-20℃～50℃	0℃～50℃	0℃～50℃	-10℃～60℃
Operation Humidity	0～95% RH (No condensation)	0～95% RH (No condensation)	0～95% RH (No condensation)	0～95% RH (No condensation)
Lifespan	>1 year	>5 years	>5 years	>10 years
Dimension (PCB)	32*42 mm	37*69 mm	21*27.1 mm	32*27*8mm
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	1.CO2, temperature, and humidity, three in one 2. Small size of 32*27*8mm 3. Low power, average current＜4mA

High sensitivity High resolution

Low power consumption

Excellent stability

Temperature compensation

Excellent linear output

High cycle life

Anti-water vapor interference

No poisoning

Need 5V power supply, even you are using a 3.3V microcontroller, like Genuino 101/ Raspberry Pi .etc.

Gas Detection: Carbon Dioxide (CO2)

Operating Voltage: 4.5 ~ 5.5V DC

Average Current: <85mA

UART output

Measuring Range: 0 ~ 50000ppm

Accuracy: ± (50ppm + 5% reading)

Preheating Time: 3min

Response Time: T90 < 30s

Operating Temperature: 0 ~ 50 ℃

Operating Humidity: 0 ~ 95% RH (no condensation)

Service Life: >5 years

Board Dimension : 21 * 27.11 mm/ 0.83 * 1.06 inches

Weight: 42g

Project: Accurate soil health assessment using calibrated ammonia gas sensors

Introduction: In this project, we will test the performance of the Ammonia Sensor NH3 Sensor (Calibrated) for the determination of soil fertility using a simple configuration.

Product wiki 

UART Infrared CO2 Sensor Probe (0-50000ppm) x1

Sensor Converter Board x1

6-Pin Sensor Cable x1

PH2.0 Gravity UART Cable x1

XH2.54 4-Pin header x1