DF Robot UART CO2 Sensor (0-50000ppm)

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.

Quick Spec

• Gas Detection: Carbon Dioxide (CO2)
• Operating Voltage: 4.5 ~ 5.5V DC
• Average Current: <85mA
• Output Signal: UART/PWM output (PWM has not been developed)
• 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 x 27.11mm
• Net Weight: 45g

Pinout

Wiring Diagram

Sample Code

/***************************************************
* Infrared CO2 Sensor 0-50000ppm(Wide Range)
* ****************************************************
* The follow example is used to detect CO2 concentration.

* @author lg.gang([email protected])
* @version  V1.0
* @date  2016-6-6

* GNU Lesser General Public License.
* See  for details.
* All above must be included in any redistribution
* ****************************************************/
#include 
SoftwareSerial mySerial(10, 11); // RX, TX
unsigned char hexdata[9] = {0xFF,0x01,0x86,0x00,0x00,0x00,0x00,0x00,0x79}; //Read the gas density command /Don't change the order
void setup() {

  Serial.begin(9600);
  while (!Serial) {

  }
  mySerial.begin(9600);

}

void loop() {
   mySerial.write(hexdata,9);
   delay(500);

 for(int i=0,j=0;i<9;i++)
 {
  if (mySerial.available()>0)
  {
     long hi,lo,CO2;
     int ch=mySerial.read();

    if(i==2){     hi=ch;   }   //High concentration
    if(i==3){     lo=ch;   }   //Low concentration
    if(i==8) {
               CO2=hi*256+lo;  //CO2 concentration
      Serial.print("CO2 concentration: ");
      Serial.print(CO2);
      Serial.println("ppm");
               }

  }
 }
}

Resources

• Product Page
• Product Wiki
• Schematic
• MH-Z16 Datasheet

Shipping List

• 1 x UART Infrared CO2 Sensor Probe (0-50000ppm)
• 1 x Sensor Converter Board
• 1 x 6-Pin Sensor Cable
• 1 x PH2.0 Gravity UART Cable
• 1 x XH2.54 4-Pin header