توضیحات
MQ-9:
MQ-9 (gas sensor) Description:
Sensitive material MQ-9 gas sensor is used in clean air low conductivity tin oxide (SnO2). When there is carbon monoxide vapor in the sensor environment, sensor conductivity with increasing gas concentration of alcohol in the air increases. Using simple circuit, the change in conductivity of the gas concentration can correspond to the output signal.
High MQ-9 gas sensor sensitivity Carbon monoxide, can withstand the interference of gasoline, smoke, water vapor. The sensor can detect a variety of alcohol concentration in the atmosphere, it is a low-cost sensor suitable for a variety of applications.
Applications:
Household gas leak alarm
* Industrial combustible gas alarm
* Portable gas detector
Product Features:
1. Wide detection range (suitable for LPG, butane, propane, methane, alcohol, hydrogen, smoke detection, etc.)
2. High sensitivity (Rin air/Rin typical gas≥5)
3. Rapid Response and Recovery (≤30s)
4. Reasonable working environment (ambient temperature: -20°C ~ +55°C )
5. long life (90% of the products do not replace the decades probe
Since induction device MQ-8 parameters
A. Standard Operating Conditions
Vc (voltage) ≤15V (AC or DC)
VH (heating voltage): 5.0V ± 0.2V (AC or DC)
RL (load resistance): Adjustable
RH (heating resistance): 31Ω ± 3Ω (room temperature)
PH (heating power) ≤900mW
B.Environmental Conditions
Tao (temperature): -10 °C -50 °C
Bag (storage temperature): -20 °C -70 °C
RH (relative humidity) <95% RH
O2 (oxygen concentration): 21% (standard conditions)
Oxygen concentration can affect sensitivity characteristics
2% greater than the minimum value
C. sensitivity characteristics
Rs (Sensing Resistance): 3KΩ-30KΩ (1000ppm Isobutane) α (3000/1000) Isobutane
Concentration slope ≤ 6
D. Reach Detection Concentration:
LPG and propane: 100ppm-10000ppm
Butane: 300ppm-5000ppm
Methane: 5000ppm-20000ppm
Hydrogen: 300ppm-5000ppm
Alcohol: 100ppm-2000ppm
E. Standard Operating Conditions:
Temperature: 20°C ± 2°C Vc: 5.0V ± 0.1V
Relative Humidity: 65% ± 5% Vh: 5.0 v ± 0.1 v
Warm up time: 5-30 min
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