Gas Sensor Module MP-135 Compact Model

Gas Sensor Module MP-135 Compact Model MP135 gas sensor is for air quality. It adopts multilayer thick film manufacturing technology. The heater and metal oxide semiconductor material on the ceramic substrate of subminiature Al2O3. These fetched out by electrode down-lead  encapsulated in metal socket and cap. Conductivity of the sensor is affected by the concentration of target gas. The higher the concentration is the higher conductivity of sensor gets. Users can adopt simple circuit to convert variation of conductivity into output signal corresponding to gas concentration.

Technical parameters :

Model			MP135
Sensor Type			Semiconductor flat surfaced sensor
Standard Encapsulation			Metal Cap
Detection Gas			H2,Alcohol, CO
Detection range			10～500ppmH2 5～500ppm Alcohol 10～500ppm CO
Standard circuit	Loop voltage	VC	≤24V DC
	Heating voltage	VH	5.0V±0.1V AC or DC
	Load resistance	RL	Adjustable
sensor features in standard test condition	Heating resistance	RH	95Ω±10Ω(Room Tem.)
	Heating consumption	PH	≤300mW
	Surface resistance	RS	10KΩ～100KΩ(in 50ppm H2 )
	Sensitivity	S	Rs(in air)/Rs(in 50ppmH2)≥3
	Concentration slope	α	≤0.6(R100ppm/R30ppm H2)
Standard condition of test	Temperature, humidity		20℃±2℃；65%±5%RH
	Standard test circuit		VC:5.0V±0.1V； VH :5.0V±0.1V