MQ-5 gas sensor natural gas city gas sensor gas sensor arduino compatibile

MQ-5 gas sensor natural gas city gas sensor gas sensor arduino compatibile

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MQ-5 Gas Sensor

This Arduino Gas Sensor can detect smoke, methane, carbon dioxide and other gases.It is capable of detecting various gases.This arduino-compatible special sensor raise alarms when the smoke, methane or any other harmful gas leaks in its reach.

  • Arduino smoke gas sensor
  • Detects smoke, methane, carbon dioxide and other gases
  • Gives alarms when the smoke/gas leaks
  • Power supply needs: 5V DC


  • Model MQ-5
  • Sensor Type Semiconductor
  • Detection Gas LPG, Methane, Coal Gas
  • Concentration 300-10000ppm( Methane, Propane, Butane, H2)
  • Circuit Loop Voltage(Vc): ?24V DC
  • Heater Voltage(Vh): 5.0V±0.2V AC or DC
  • Load Resistance(Rl): Adjustable
  • Character Heater Resistance(Rh): 31?±3?Room Tem.
  • Heater Consumption(Ph): ?900mW
  • Sensing Resistance(Rs): 2K?-20K?(in 2000ppm C3H8 )
  • Sensitivity(S): Rs(in air)/Rs(1000ppm C3H8)?5
  • Slope: ?0.6(R1000ppm/R500ppm H2)
  • Condition Tem. Humidity: 20±265%±5%RH
  • Standard Test Circuit: Vc:5.0V±0.1V
  • VH: 5.0V±0.1V
  • Preheat Time: Over 48 hours
  • Pins 5 Pins
  • Material Metal, Plastic
  • Size 2.4 x 1.7cm / 0.94? x 0.67?(L*D)
  • Color Silver Tone
  • Weight 4g
  • Package Content 1 x Gas Sensor


A. the standard working conditions
The parameter name
Technical conditions
Circuit voltage
15 v or less
AC or DC
The VH
The heating voltage
5.0 V + / - 0.2 V
AC or DC
Load resistance
Heat resistance
31 ? plus or minus 3 ?
At room temperature
The power consumption of the heating
900 mw or less
B. environmental conditions
The parameter name
Technical conditions
The use of temperature
- 10 ? to 50 ?
Storage temperature
- 20 ? to 70 ?
Relative humidity
Less than 95% Rh
Oxygen concentrations
21% (standard conditions)
Oxygen concentration affects sensitivity characteristics
The minimum value is greater than 2%
C. the sensitivity features
The parameter name
Technical parameters
The rs
Sensitive body resistance
10 k ? - 60 k ?
Methane (1000 PPM)
Detection range:
300-5000 PPM
Liquefied petroleum gas, natural gas, coal gas.
(1000 PPM / 5000 PPM CH4)
The concentration gradient
0.6 or less
Standard working conditions
Temperature: prefix = st1 ns = "urn: schemas - Microsoft - com: office: smarttags" to 20 ? + 2 ? Vc: 5.0 V + / - 0.1 V
Relative humidity: 65% plus or minus 5% Vh: 5.0 V + / - 0.1 V
Warm up time
Not less than 24 hours

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