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Product details
product details
The MP402 combustible gas sensor adopts a multi-layer thick film manufacturing process, with heaters and metal oxide semiconductor gas sensing layers respectively made on both sides of a micro Al2O3 ceramic substrate, and packaged in a metal shell. When there is a detected gas in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. A simple circuit can be used to convert this change in conductivity into an output signal corresponding to the gas concentration.
Sensor characteristics
This product has good sensitivity to methane over a wide concentration range, with excellent anti-interference ability, low power consumption, fast response recovery, good stability, long lifespan, low cost, and simple driving circuit.
Main applications
1. Combustible gas leak monitoring devices and fire/safety detection systems used in households, factories, and commercial premises.
2. Combustible gas leak alarm and gas leak detector.
TECHNICAL INDEX
| PRODUCT MODEL | MP402 | ||
| product type | Flat semiconductor sensor | ||
| Standard packaging | Metal encapsulation | ||
| Detect gas | Methane, natural gas, biogas | ||
| Detect concentration | 300-10000ppm (methane, natural gas) | ||
| standard circuit condition |
loop voltage | VC | ≤24V DC |
| heating voltage | VH | 5.0V±0.1V AC or DC | |
| load resistance | RL | adjustable | |
| standard test condition Lower Qi Min Yuan Item Special sexually |
heating resistor | RH | 85 Ω± 15 Ω (room temperature) |
| Heating power consumption | PH | ≤350mW | |
| Sensitive body resistance |
RS | 1K Ω~20K Ω (in 5000ppm methane) | |
| sensitivity | S | Rs (in air)/Rs (in 5000ppm methane) ≥ 5 | |
| Concentration slope | α | ≤0.6(R5000ppm/R1000ppmMethane) | |
| Standard testing conditions | Temperature and humidity | 20℃±2℃； 55%±5%RH | |
| Standard Test Circuit | VC:5.0V±0.1V； VH:5.0V±0.1V |
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| Warm-up time | Not less than 48 hours | ||
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