Principle Introduction:
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 |
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 |
Datasheet Download
