Cat No: SGS-LJX-0006 Datasheet
Product Name: Combustible Gas Sensor, 300–10000 ppm (methane)
Quantities: - +
| Detailed Description | The gas sensor uses tin dioxide (SnO2), a gas-sensitive material with low conductivity in clean air. When combustible gases are present in the sensor's environment, the sensor's conductivity increases with the concentration of the combustible gas in the air. A simple circuit can convert this change in conductivity into an output signal corresponding to the gas concentration. The MQ-4B gas sensor has high sensitivity to methane and strong resistance to interference from alcohol and other interfering gases. |
| Main Applications | Widely applicable to household gas leak alarms, industrial combustible gas alarms, and portable gas detectors. |
| Product Type | Semiconductor gas sensor |
| Standard Package | Plastic sealing |
| Detecting Gas | Methane |
| Detection Concentration | 300–10000 ppm (methane) |
| Circuit Voltage | 5.0V±0.1V DC |
| Heating Voltage | 5.0V±0.1V AC or DC |
| Load Resistor | Adjustable |
| Heating Resistor | 28Ω±3Ω (room temperature) |
| Heating Power Consumption | ≤1W |
| Sensitivity | Rs(in air)/Rs(in 5000ppm methane)≥5 |
| Output Voltage | 2.5V～4.0V (in 5000ppm CH4) |
| Concentration Slope | ≤0.6 (R5000ppm/R1000ppm CH4) |
| Standard Test Temperature and Humidity | 20℃±2℃; 55%±5%RH |
| Standard Test Circuit | Vc: 5.0V±0.1V; VH: 5.0V±0.1V |
| Standard Test Preheating Time | No less than 48 hours |
| Oxygen Content | 21% (not less than 18%, (Oxygen concentration will affect the sensor's initial value, sensitivity and repeatability. Please consult when using it in low oxygen concentration conditions ) |
| Life | 10 years |
| Features | High sensitivity to methane It has strong resistance to interference from alcohol and other interfering gases. Long lifespan, low cost, and simple drive circuit |
| Note | Output voltage (Vs) refers to the voltage in the test atmosphere. |
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For industrial/research use only. Not for personal/medical use.
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Eata Sensors is your strategic partner in precision sensing technology. We offer a full range of advanced sensor products, core components, and customized engineering services. We collaborate with global clients to jointly solve complex measurement challenges.
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