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Highly Sensitive Semiconductor Flammable Gas Sensor MQ-4 300～10000ppm CH4 Detection Range

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Highly Sensitive Semiconductor Flammable Gas Sensor MQ-4 300～10000ppm CH4 Detection Range

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Model Number : MQ-4

Place of Origin : CN

MOQ : 1

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 5000pcs

Delivery Time : 3-5work days

Packaging Details : Paper box

Model : MQ-4

Sensor Type : Semiconductor

Standard Encapsulation : Bakelite, Metal cap

Target Gas : Methane

Detection range : 300～10000ppm(CH4)

Loop Voltage : 5.0V±0.1V DC

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Flammable Gas Sensor MQ-4

Profile:

Sensitive material of MQ-4 gas sensor is SnO2, which with lower conductivity in clean air. When the target flammable gas exist, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.

MQ-4 gas sensor has high sensitivity to methane, also has anti-interference to alcohol and other gases.

Features:

It has good sensitivity to methane in wide range, and has advantages such as long lifespan, low cost and simple drive circuit &etc.

Main Applications:

It is widely used in domestic gas leakage alarm, industrial flammable gas alarm and portable gas detector.

Model MQ-4
Sensor Type Semiconductor
Standard Encapsulation Bakelite, Metal cap
Target Gas Methane
Detection range 300～10000ppm(CH4)
Standard Circuit Conditions Loop Voltage Vc 5.0V±0.1V DC
Heater Voltage VH 5.0V±0.1V AC or DC
Load resistance RL Adjustable
Sensor character under standard test conditions Heater Resistance RH 28Ω±3Ω(room temp.)
Heater consumption PH ≤1W
Sensitivity S Rs(in air)/Rs(in 5000ppmCH4)≥5
Output Voltage Vs 2.5V～4.0V (in 5000ppm CH4)
Concentration Slope α ≤0.6(R5000ppm/R1000ppmCH4)
Standard test conditions Temp. Humidity 20℃±2℃；55%±5%RH
Standard test circuit Vc:5.0V±0.1V VH:5.0V±0.1V
Preheat time Not less than 48 hours
O2content 21%(not less than 18%) O2 concentration effects initial value, sensitivity and repeatability.
Life span 10 years

Highly Sensitive Semiconductor Flammable Gas Sensor MQ-4 300～10000ppm CH4 Detection Range


Product Tags:

10000ppm Flammable Gas Sensor

      

Highly Sensitive Semiconductor Flammable Gas Sensor

      

MQ-4 Flammable Gas Sensor

      
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