low cost smoke sensor for gas cooker

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10 Piece/Pieces (Min. Order)
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Overview
Quick Details
Place of Origin:
Henan, China (Mainland)
Brand Name:
WINSEN
Model Number:
MQ-2
Usage:
Gas Sensor
Theory:
Resistance Sensor
Output:
Analog Sensor
Sensor type:
Semiconductor gas sensor
Detection gas:
Smoke and flammable gas
SupplyAbility
SupplyAbility:
30000 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
inner packaging: foam cushion, outside packaging: carton
Port
shanghai, guangzhou, tianjing, shenzhen
Lead Time :
3 working days after receiving the payment

Specifications

1.Long life and low cost.
2.Simple drive circuit.
3. large signal output
4.RoHS

Gas and smoke home security sensor

 

Sensitive material of MQ-2 gas sensor is SnO2, which with lower conductivity in clean air. 

When the target combustible gas exist, 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.MQ-2 gas sensor has high sensitity to LPG, Propane 

and Hydrogen, also could be used to Methane and other combustible steam, it is with low cost and 

suitable for different application.

 

Application                        

* Domestic gas leakage detector

* Industrial Combustible gas detector

* Portable gas detector

 

Technical Data                                      

Model No.

MQ-2

Sensor Type

Semiconductor 

Standard Encapsulation

Bakelite (Black Bakelite)

Detection Gas 

Combustible gas and smoke

Concentration

300-10000ppm
( Combustible gas)

Circuit

Loop Voltage

Vc

≤24V  DC

Heater Voltage

VH

5.0V±0.2V ACorDC

Load Resistance

RL

Adjustable

Character

Heater Resistance

RH

31Ω±3Ω(Room Tem.)

Heater consumption

PH

≤900mW

Sensing Resistance

Rs

2KΩ-20KΩ(in 2000ppm C3H8 )

Sensitivity

S

Rs(in air)/Rs(1000ppm  isobutane)≥5

Slope

α

≤0.6(R5000ppm/R3000ppm CH4)

Condition

Tem.  Humidity

20°C±2°C;65%±5%RH

Standard test circuit

Vc:5.0V±0.1V;

  VH: 5.0V±0.1V

Preheat time

Over 48 hours