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Product details
product details
The gas sensing material used in the MQ316 oral odor sensor is a semiconductor material with low conductivity in clean air. When there is a gas to be measured in the environment where the sensor is located, the conductivity of the sensor increases with the increase of the concentration of the gas to be measured. The change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit
Sensor characteristics
This product has high sensitivity to ethanol, hydrogen sulfide, and methyl mercaptan within a wide concentration range, and has advantages such as long lifespan, low cost, and simple driving circuit.
Main applications
Widely applicable to exhaled breath odor detectors, portable alcohol detectors, etc.
TECHNICAL INDEX
| PRODUCT MODEL | MQ316 | ||
| product type | semiconductor gas sensor | ||
| Standard packaging | Metal encapsulation | ||
| Detect gas | Ethanol, hydrogen sulfide, methyl mercaptan | ||
| Detect concentration | 5-200 (ethanol) | ||
| Standard circuit conditions | loop voltage | Vc | ≤24V DC |
| heating voltage | VH | 0.9V±0.1V AC or DC | |
| load resistance | RL | adjustable | |
| Characteristics of gas sensing components under standard testing conditions | heating resistor | RH | 4.0 Ω± 0.5 Ω (room temperature) |
| Heating power consumption | PH | ≤150mW | |
| sensitivity | S | Rs (in air)/Rs (in 10ppm ethanol) ≥ 2 | |
| Output voltage | Vs | 1.0V~3.0V (in 10ppm ethanol) | |
| Concentration slope | α | ≤0.6(R50ppm/R10ppmEthanol) | |
| Standard testing conditions | Temperature and humidity | 20℃±2℃； 50%±10%RH | |
| Standard Test Circuit | Vc:3.0V±0.1V； VH:0.9V±0.1V |
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| Warm-up time | Not less than 48 hours | ||
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