MP-7 Carbon Monoxide Sensor
MP-7 type carbon monoxide detection planar semiconductor gas sensor adopts advanced planar thick film production process. It is composed of heater and metal oxide semiconductor material formed on micro Al2O3 ceramic substrate. inside the cap. The high and low temperature cycle detection method is used to detect carbon monoxide (1.5V), and the impurity gas adsorbed at low temperature is cleaned at high temperature (5.0V). The conductivity of the sensor increases as the concentration of carbon monoxide gas in the air increases, and a simple circuit can convert the change in conductivity into an output signal corresponding to the gas concentration.
Sensor Features
This product has good sensitivity to carbon monoxide in a wide concentration range, and has the characteristics of small size, long life, low cost, and simple driving circuit.
main application
Widely used in household carbon monoxide gas leak alarms, industrial carbon monoxide gas alarms and portable carbon monoxide gas detectors.
Technical indicators
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Product number |
MP-7 |
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product type |
Planar Semiconductor Gas Sensor |
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standard package |
metal package |
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detect gas |
carbon monoxide |
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Detection concentration |
50～1000ppm CO |
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Standard Circuit Conditions |
loop voltage |
Vc |
≤10V DC |
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heating voltage |
VH |
5.0V±0.1V AC or DC（high temperature） |
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heating time |
TL |
60S±1S（high temperature），90S±1S（low temperature） |
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Load Resistance |
RL |
adjustable |
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Gas sensor characteristics under standard test conditions |
heating resistance |
RH |
105±10Ω（room temperature） |
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Heating power consumption |
PH |
≤240mW |
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Sensitivity |
S |
Rs(in air)/Rs(in 100ppm CO)≥3 |
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The output voltage |
Vs |
2.5V ～ 4.3V (in 100ppm CO) |
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Concentration slope |
α |
≤0.6(R300ppm/R50ppm CO) |
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environmental conditions |
Operating temperature |
Tao |
-10℃~50℃ |
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Storage temperature |
Tas |
-20℃~70℃ |
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Relative humidity |
RH |
Less than 95% RH |
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oxygen concentration |
O2 |
21%±1％（not less than 18%） |
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Changes in Oxygen Concentration Affect Sensor Sensitivity |
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Preheat time |
Not less than 48 hours |
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oxygen concentration |
21% (not less than 18%, (the oxygen concentration will affect the initial value, sensitivity and repeatability of the sensor, please consult when using it under low oxygen concentration) |
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life |
10 years |
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Note: Product parameters are subject to change without prior notice
production workshop
patent certificate
You can contact us through the online message and online customer service on the right, or you can call our national service hotline: 086-0371-60932951.
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