• Flammable gas Sensor

MP-4 Flammable gas Sensor/ Combustible gas sensor

  • • Target Gas: Methane/CH4, Nature gas
  • • Range :300~10000ppm
  • • Application:gas detector, gas leakage alarm, flammable gas alarm in domestic area

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Principle Introduction:
MP-4 model with advanced planar construction is comprised of heater and metal oxide semiconductor material of subminiature Al2O3 ceramic plate, fetch out electrode down-lead, encapsulation in metal base and cap. When the target gas exists , The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, convert change of conductivity to correspond output signal of gas concentration.
Applications :
It is widely used in domestic gas leakage alarm, industrial flammable gas alarm and portable gas detector.
Technical parameters :
Model MP-4
Sensor Type Flat surfaced
Standard Encapsulation Metal cap
Target Gas CH4, Nature gas,
Detection range 300-10000ppm
Standard Circuit Conditions Loop Voltage Vc ≤24V DC
Heater Voltage VH 5V±0.1V AC or DC
Load Resistance RL Adjustable
Sensor character under standard test conditions Heater Resistance RH 85Ω±15Ω (room tem.)
Heater consumption PH ≤350mW
Sensitivity S Ro(in air)/Rs(5000ppm CH4)≥5
Sensitive resistance RS 1KΩ~20KΩ (in 5000ppm CH4)
Concentration Slope α ≤0.6(R5000ppm/R1000ppm CH4)
Standard test conditions Tem. Humidity 20℃±2℃;55%±5%RH
Standard test circuit Vc::5V±0.1V VH: 5V±0.1V
Preheat time Over 48 hours
Reference Circuit :

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