MP-4 Flat Surfaced Flammable Gas Sensor

Household CH4 Gas Sensor

Applications :

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

Product Advantages:

*Lower consumption
*Small size
*Fast response and resume
*Highest sensitivity
*Excellent stability and long lifey
*Easy circuit and big signal output
*Excellent selectivity

Product Description:

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.

Technical Parameters:

Model			MP-4
Sensor Type			Flat surfaced
Standard Encapsulation			Metal cap
Target Gas			CH4, Nature gas, marsh gas
Detection range			300~10000ppm (methane, natural gas)
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 temp.)
	Heater consumption	PH	≤350mW
	Sensitive resistance	RS	1KΩ～20KΩ (in 5000ppm CH4)
	Sensitivity	S	Ro(in air)/Rs(5000ppm CH4)≥5
	Concentration Slope	α	≤0.6(R5000ppm/R1000ppm CH4)
Standard test conditions	Temp. Humidity		20℃±2℃；55%±5%RH
	Standard test circuit		Vc::5V±0.1V; VH: 5V±0.1V
	Preheat time		Not less than 48 hours
	O2 content		21%（not less than 18%） O2 concentration effects initial value, sensitivity and repeatability.
Lifespan			10 years