MP905 Air-Quality Gas Sensor

For harmful gas detection, automatic exhaust device, air cleaner

Applications :

*household and office for harmful gas detection
*automatic exhaust device
*air cleaner

Product Advantages:

*High sensitivity to alcohol, smoke, formaldehyde, toluene, acetone, benzene
*lighter gas, paint
*quick response and resume
*low power consumption
*simple detection circuit
*good stability and long life

Product Description:

MP905 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 are 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			MP905
Sensor Type			Semiconductor flat surfaced sensor
Standard Encapsulation			Metal Cap
Detection Gas			benzene,toluene,formaldehyde,al cohol,smoke,lighter gas,paints etc.
Detection range			0.5～1000ppm(alcohol)
Standard circuit	Loop voltage	Vc/ VH	5.0V±0.1V DC
Standard circuit	Load resistance	RL	Adjustable
sensor features in standard test condition	Heating resistance	RH	95Ω±10Ω(Room Tem.)
	Heating consumption	PH	≤300mW
	Surface resistance	RS	1KΩ～15KΩ(in 10ppm alcohol)
	Sensitivity	S	Rs(in air)/Rs(in 10ppm alcohol）≥2
	Concentration slope	α	≤0.6(R 50ppm/R 10ppm alcohol)
Standard condition of test	Temperature, humidity		20℃±2℃；65%±5%RH
	Standard test circuit		VC/VH :5.0V±0.1V
	Warm-up time		More than 48 hours