Home | Sensors&Transmitters| Gas Sensor| Flammable Gas Sensors

Smoke Sensor Flammable Gas Sensor - MQ-2

? Sensor Type: Semiconductor
? Standard Encapsulation: Bakelite, Metal cap
? Target Gas: Flammable gas, smoke gas sensor
? Detection range: 300 to 10000ppmm
? Tem. Humidity: 20°C±2°C; 55%±5%RH
? Standard test circuit: Vc: 5.0V±0.1V; VH: 5.0V±0.1V
? Preheat time: Over 48 hours

Model Number: MQ-2
Data Sheet:

Quantity:: - +

Inquire Now Add to cart

Mouse over image to zoom

Product Specification

MQ-2 Smoke Sensor Flammable Gas Sensor Principle Introduction
Sensitive material of MQ-2 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-2 gas sensor has high sensitivity to propane and smoke, also can detect the natural gas and other flammable steam well. It is with low cost and suitable for different applications of detecting kinds of flammable gases.

MQ-2 Smoke Sensor Flammable Gas Sensor Features
It has good sensitivity to propane, smoke &etc in wide range, and has advantages such as long lifespan, low cost and simple drive circuit &etc.

MQ-2 Smoke Sensor Flammable Gas Sensor Applications
It is widely used in domestic gas leakage alarm, industrial flammable gas alarm and portable gas detector.

MQ-2 Smoke Sensor Flammable Gas Sensor Technical parameters

Model			MQ-2
Sensor Type			Semiconductor
Standard Encapsulation			Bakelite, Metal cap
Target Gas			Flammable gas, smoke gas sensor
Detection range			300 ~ 10000ppm (flammable gas)
Standard Circuit Conditions	Loop Voltage	V_c	≤24V DC
	Heater Voltage	V_H	5.0V±0.1V AC or DC
	Load Resistance	R_L	Adjustable
Sensor character under standard test conditions	Heater Resistance	R_H	29Ω±3Ω (room tem.)
	Heater consumption	P_H	≤950mW
	Sensitivity	S	Ro(in air)/Rs(2000ppm C3H8) ≥5
	Output Voltage	V_s	2.5V ~ 4.0V (in 2000ppm C3H8)
	Concentration Slope	α	≤0.6 (R3000ppm/R1000ppm C3H8)
Standard test conditions	Tem. Humidity		20°C±2°C; 55%±5%RH
	Standard test circuit		Vc: 5.0V±0.1V; VH: 5.0V±0.1V
	Preheat time		Over 48 hours