MP-7 Flat-surfaced Semiconductor Flammable Gas Sensor

For residential and industrial CO leakage detection

Applications :

*CO alarm
*Portable co detector

Product Advantages:

*Low cost
*Compact size
*10 years lifetime
*High Sensitivity to CO

Product Description:

MP-7 adopts advanced planar construction production technics, using MOS material formed by micro AL2O3 ceramic tube and heater, electro-down-lead be fetched out, and are fixed into a metal base and cover. Adopting low and high temperature circling detection: when low temperature （VH=1.5V）, it detects CO, Conductance of sensor bigger along with CO concentration in air; When high temperature（VH=5.0V）, clean other gases, using simple circuit could change the conductance, change it to be output signal which relatively to the gas concentration.

Technical Parameters:

Model			MP-7
Sensor Type			Flat surfaced
Standard Encapsulation			Metal cap
Target Gas			CO gas
Detection range			50-1000ppm CO
Standard Circuit Conditions	Loop Voltage	Vc	≤10V DC
	Heater Voltage	VH	5V±0.1V AC or DC(high temp.) 1.5V±0.1V AC or DC(low temp.)
	Heating time	TL	60S±1S（high temp.） 90S±1S（low temp.）
	Load Resistance	RL	Adjustable
Sensor character under standard test conditions	Heater Resistance	RH	105Ω±10Ω (room temp.)
	Heater consumption	PH	≤240mW
	Sensitivity	S	Ro(in air)/Rs(100ppm CO)≥3
	Output voltage	VS	2.5V～4.3V (in 100ppm CO)
	Concentration Slope	α	≤0.6(R300ppm/R50ppm CO)
Standard test conditions	Operation Temp.	Tao	-10℃～50℃
	Storage Temp.	Tas	-20℃～70℃
	Relative Humidity	RH	＜95%RH
	O2 content		21%（not less than 18%） O2 concentration effects initial value, sensitivity and repeatability.
	Preheat time		Not less than 48 hours
Lifespan			10 years