1 Thiết Bị Cảm Biến Khí Gas Mq-9 tại Lotte Market

Giới thiệu 1 Thiết Bị Cảm Biến Khí Gas Mq-9 tại Lotte Market

MQ-9 Carbon Monoxide Gas Sensor MQ9 combustible gas sensor alarm Detector

MQ-9 sensor：
The gas sensing material used in the semiconductor body combustible gas sensor MQ-9 is tin oxide (SnO2) having a low electrical conductivity in clean air. The low-temperature (1.5V heating) is used to detect carbon monoxide by high-temperature cycle detection method. The conductivity of the sensor increases with the increase of the concentration of carbon monoxide gas in the air. The high temperature (5.0V heating) detects the smoldering of the combustible gas methane and propane and cleans the low temperature. gas. The change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit. The MQ-9 semiconductor combustible gas sensor is highly sensitive to carbon monoxide, methane, and liquefied gases. This sensor can detect a variety of gases containing carbon monoxide and flammability. It is a low-cost sensor suitable for a variety of applications.

∮Main features and applications:
Good sensitivity to carbon monoxide/combustible gases
High sensitivity to methane, propane and carbon monoxide
Long life, low cost
Simple drive circuit
Household gas leak alarm
Industrial combustible gas alarm
Portable gas detector

∮Main technical parameters:
Model MQ-9
Product Type Semiconductor Gas Sensor
Standard package
Detection gas carbon monoxide, combustible gas
Detection concentration 10-1000ppmCO; 100-10000ppm combustible gas
Loop voltage (Vc) ≤10V DC
Heating voltage (VH) 5.0V±0.2V AcorDC 1.5V±0.1V ACorDC (low)
Heating time (TL) 60±1S (high) 90±1S (low)
Load resistor (RL) adjustable
Heating resistance (RH) 31Ω ± 3Ω (room temperature)
Heating power consumption (PH) is about 350mW
Sensitive surface resistance (Rs) 2KΩ-20KΩ (in100ppmCO)
Sensitivity (S) Rs(in air)/Rs(100ppmCO)≥5
Concentration slope (α) ≤ 0.6 (R300ppm/R100ppm CO)
Temperature, humidity 20 °C ± 2 ° C; 65% ± 5% RH
Standard test circuit Vc: 5.0V ± 0.1V; VH (high): 5.0V ± 0.1V; VH (low): 1.5V ± 0.1V
Warm-up time is not less than 48 hours



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2.Please read the item description, if you have any question, do not hesitate to contact us.
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Shipment：
1.1-2 days to ship(except for the pro-order item)

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