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Product details
product details
The MP-7 type carbon monoxide detection planar semiconductor gas sensor adopts advanced planar thick film production technology, consisting of a heater and a metal oxide semiconductor material formed on a micro Al2O3 ceramic substrate. It is led out by electrode leads and packaged in a metal socket and cap. Using a high-low temperature cycle detection method to detect carbon monoxide (1.5V), and cleaning impurities adsorbed at low temperatures during high temperature (5.0V). The conductivity of the sensor increases with the concentration of carbon monoxide gas in the air, and a simple circuit can convert the change in conductivity into an output signal corresponding to the gas concentration.
Sensor characteristics
This product has good sensitivity to carbon monoxide over a wide concentration range, and is characterized by its small size, long lifespan, low cost, and simple driving circuit.
Main applications
Widely applicable to household carbon monoxide gas leak detectors, industrial carbon monoxide gas detectors, and portable carbon monoxide gas detectors.
TECHNICAL INDEX
| PRODUCT MODEL | MP-7 | ||
| product type | Flat semiconductor gas sensor | ||
| Standard packaging | Metal encapsulation | ||
| Detect gas | carbon monoxide | ||
| Detect concentration | 50～1000ppm CO | ||
| Standard circuit conditions | loop voltage | Vc | ≤10V DC |
| heating voltage | VH | 5.0V ± 0.1V AC or DC (high temperature) 1.5V ± 0.1V AC or DC (low temperature) |
|
| heating time | TL | 60S ± 1S (high temperature), 90S ± 1S (low temperature) | |
| load resistance | RL | adjustable | |
| Characteristics of gas sensing components under standard testing conditions | heating resistor | RH | 105 ± 10 Ω (room temperature) |
| Heating power consumption | PH | ≤240mW | |
| sensitivity | S | Rs(in air)/Rs(in 100ppm CO)≥3 | |
| Output voltage | Vs | 2.5V ～ 4.3V (in 100ppm CO) | |
| Concentration slope | α | ≤0.6(R300ppm/R50ppmCO) | |
| environmental condition | Usage temperature | Tao | -10℃~50℃ |
| storage temperature | Tas | -20℃~70℃ | |
| relative humidity | RH | Less than 95% RH | |
| Oxygen concentration | O2 | 21% ± 1% (not less than 18%) | |
| The variation of oxygen concentration affects the sensitivity characteristics of sensors | |||
| Warm-up time | Not less than 48 hours | ||
| Oxygen concentration | 21% (not less than 18%) (Oxygen concentration will affect the initial value, sensitivity, and repeatability of the sensor. Please consult for use when using at low oxygen concentrations) | ||
| lifetime | 10 Years | ||
Note: Product parameters are subject to change without prior notice
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