MQ 7 Carbon Monoxide (CO) Gas Sensor Module – High Sensitivity CO Detector for Arduino by ADIY

MQ 7 Carbon Monoxide (CO) Gas Sensor Module – High Sensitivity CO Detector for Arduino by ADIYDESCRIPTION The MQ 7 gas sensor has high sensitivity to Carbon Monoxide. The sensor could be used to detect different gases contains CO, it is with low cost and suitable for different application. It is widely used in domestic CO gas leakage alarm, industrial CO gas alarm, and portable CO gas detector. It can be easily interfaced with Arduino or Raspberry Pi using a simple electronic circuit on a breadboard. MQ 7 CO Carbon Monoxide Coal Gas Sensor

DESCRIPTION 

The MQ-7 gas sensor has high sensitivity to Carbon Monoxide. The sensor could be used to detect different gases contains CO, it is with low cost and suitable for different application.It is widely used in domestic CO gas leakage alarm, industrial CO gas alarm, and portable CO gas detector. It can be easily interfaced with Arduino or Raspberry Pi using a simple electronic circuit on a breadboard.

DEVELOPMENT SOURCES

• Arduino Sample Code 
• Datasheet

FEATURES

• Operating voltage : DC 5 V.
• IC driver : LM 393.
• Size : 11 x 33 x 20 mm.
• Range : 10 to 1000 ppmm.
• Characteristic gas : 100 ppmm CO.
• Sensitive resistance : 2 to 20 10kohm 10kohm at 100ppm CO.
• Sensitivity : ≥ 3%.
• Return time : ≤ 30 s.
• Heating resistance : ± 31ohm 3ohm.
• Heating current : ≤ 180 mA.
• Reaction time : ≤ 1 s.
• Heating voltage : 5.0V ± 2V / 1.5 ± 1V.
• Heating power : approx. 350 mW.
• Ambient temperature : -20 ° C to + 50 ° C.
• Humidity : ≤ 95% RH.
• Oxygen content : 21%.
• The analog output voltage, the higher the concentration the higher the voltage.
• The carbon monoxide detection with better sensitivity.
• There are four screw holes for easy positioning;
• Product Dimensions: 32 x 20 x 22 mm (LxWxH)
• With a long service life and reliable stability
• Rapid response and recovery characteristics

APPLICATIONS

• For home, carbon monoxide detection device environment. Suitable for carbon monoxide and gas detection.
• MQ-7 Gas Sensor ( detects carbon mono oxide )

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MQ 7 - Carbon Monoxide Sensor Module