Products
C3H8 Gas Sensor
Application:
Household gas leak alarmsProduct characteristics:
Has good sensitivity to propane in a wide concentration rangeDescription
The gas-sensitive material used in the MQ-K5B gas sensor is tin dioxide (SnO2) with low conductivity in clean air. When there is combustible gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of the concentration of combustible gas in the air. A simple circuit can be used to convert the change in conductivity into an output signal corresponding to the gas concentration.
The MQ-K5B gas sensor is highly sensitive to propane and has strong anti-interference ability to alcohol and some other interfering gases.
Specifications
| Product model | MQ-K5B | ||
| Product type | Semiconductor gas sensor | ||
| Standard packaging | Plastic packaging | ||
| Detect gas | Propane | ||
| Detect concentration | 300~10000ppm(Propane) | ||
| Standard circuit conditions | Loop voltage | Vc | 5.0V±0.1V DC |
| Heat voltage | VH | 5.0V±0.1V AC or DC | |
| Load resistance | R L | adjustable | |
| Characteristics of gas sensing components under standard testing conditions | Heating resistor | RH | 28 Ω±3 Ω(indoor temperature) |
| Heating power | PH | ≤1W | |
| Sensitivity | S | Rs(in air)/Rs(in 5000ppm Propane)≥5 | |
| Output Voltage | Vs | 2.5V～4.0V (in 5000ppm CH4) | |
| Concentration slope | α | ≤0.6(R5000ppm/R1000ppm CH4) | |
| Standard testing conditions | Temperature/humidity | 20℃土2℃; 55%士5%RH | |
| Standard Test Circuit | VC: 5V±0.1V; VH: 5V±0.1V | ||
| Warm-up time | no 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) | ||
| Product Life | 10 years | ||
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