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.

Applications :

They are used in gas leakage detecting equipment in family, industry and commercial field, fire resistance/ safety detection system.

CO gas leakage alarm and detector

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

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	V_c	≤10V DC
	Heater Voltage	V_H	5V±0.1V AC or DC(high temp.) 1.5V±0.1V AC or DC(low temp.)
	Heating time	T_L	60S±1S（high temp.） 90S±1S（low temp.）
	Load Resistance	R_L	Adjustable
Sensor character under standard test conditions	Heater Resistance	R_H	105Ω±10Ω (room temp.)
	Heater consumption	P_H	≤240mW
	Sensitivity	S	Ro(in air)/Rs(100ppm CO)≥3
	Output voltage	V_S	2.5V～4.3V (in 100ppm CO)
	Concentration Slope	α	≤0.6(R_300ppm/R_50ppmCO)
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

Reference Circuit :

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