MQ-5 Flammable Gas Sensor for Detecting LPG in Standard Bakelite Encapsulation
MQ-5 Flammable Gas Sensor
Profile :
Sensitive material of MQ-5 gas sensor is SnO2,which with lower conductivity in clean air. When the target flammable gas exist, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.
MQ-5gas sensor has high sensitivity to butane, propane, methane and can detect methane and propane at the same time. It also can detect kinds of flammable gases, especially LPG(Propane). It is a kind of low–cost sensor for many applications.
Features :
It has good sensitivity to flammable gas (Especially Propane) in wide range, and has advantages such as long lifespan, low cost and simple drive circuit &etc.
Main Applications :
It is widely used in domestic gas leakage alarm, industrial flammable gas alarm and portable gas detector.
| Model | MQ-5 | ||
| Sensor Type | Semiconductor | ||
| Standard Encapsulation | Bakelite, Metal cap | ||
| Target Gas | LPG, CH4 | ||
| Detection range | 300～10000ppm(CH4,C3H8) | ||
| Standard Circuit Conditions | Loop Voltage | Vc | 5.0V±0.1V DC |
| Heater Voltage | VH | 5.0V±0.1V AC or DC | |
| Load resistance | RL | Adjustable | |
| Sensor character under standard test conditions | Heater Resistance | RH | 30Ω±3Ω (RoomTemp.) |
| Heater consumption | PH | ≤950mW | |
| Sensitivity | S | Rs(in air)/Rs( in 2000ppm C3H8)≥5 | |
| Output Voltage | Vs | 2.5V～4.0V (in 2000ppm C3H8) | |
| Concentration Slope | α | ≤0.6(R3000ppm/R1000ppm C3H8) | |
| Standard test conditions | Tem. Humidity | 20℃±2℃；55%±5%RH | |
| Standard test circuit | Vc:5.0V±0.1V VH:5.0V±0.1V | ||
| Preheat time | Not less than 48 hours | ||
| O2content | 21%(No less than 18%) O2 concentration effects initial value, sensitivity and repeatability. | ||
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.