Product Introduction
1. MQ-5 Combustible Gas Sensor Product Description
MQ-5Gas SensorThe gas sensing material used is tin dioxide (SnO2) with low conductivity in clean air. When combustible gas is present in the environment, the sensor's conductivity increases with the concentration of the combustible gas. A simple circuit can convert the change in conductivity into an output signal corresponding to the gas concentration.
The MQ-5 gas sensor has high sensitivity to butane, propane, and methane, and can effectively detect both methane and propane. This sensor can detect a variety of combustible gases, especially natural gas, making it a low-cost sensor suitable for multiple applications.
2. MQ-5 Combustible Gas Sensor Features
* Good sensitivity to combustible gases in a wide concentration range
* High sensitivity to butane, propane, and methane
* Long life, low cost
* Simple drive circuit required
3. MQ-5 Combustible Gas Sensor Main Applications
* Home gas leak alarms
* Industrial combustible gas alarms
* Portable gas detectors
4. MQ-5 Combustible Gas Sensor Technical Specifications
| Model |
MQ-5 |
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| Product Type |
Semiconductor gas sensing element |
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| Standard Package |
Bakelite (black bakelite) |
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| Detection Gas |
Liquefied petroleum gas, methane, coal gas, LPG |
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| Detection Concentration |
300-10000ppm (methane, propane, butane, hydrogen) |
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| Standard Circuit Conditions |
Loop Voltage |
Vc |
≤24V DC |
| Heater Voltage |
VH |
5.0V±0.2V ACorDC |
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| Load Resistance |
RL |
Adjustable |
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| Gas Sensing Element Characteristics under Standard Test Conditions |
Heater Resistance |
RH |
31Ω±3Ω (room temperature) |
| Heater Power Consumption |
PH |
≤900mW |
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| Surface Resistance of Sensing Body |
Rs |
2KΩ-20KΩ(in 2000ppm C3H8 ) |
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| Sensitivity |
S |
Rs(in air)/Rs(1000ppm isobutane)≥5 |
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| Concentration Slope |
α | ≤0.6(R1000ppm/R500ppm H2) |
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| Standard Test Conditions |
Temperature, Humidity |
20℃±2℃；65%±5%RH |
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| Standard Test Circuit |
Vc:5.0V±0.1V； VH: 5.0V±0.1V |
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| Preheat Time |
No less than 48 hours |
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