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
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