Features
– Sensitive material MQ-9 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2).
– Detection method using low temperature cycling (1.5V heating ) to detect carbon monoxide, conductivity sensors with carbon monoxide in the air increased with increasing gas concentration , spurious adsorption at high temperatures (5.0V heating ) detection of combustible gases methane, propane and cryogenic cleaning gases.
– Simple circuit can be used to change the conductivity , concentration of the gas is converted to the corresponding output signal.
– MQ-9 high gas sensor for carbon monoxide, methane , liquefied petroleum gas sensitivity , the sensor can detect a variety of gases containing carbon monoxide and flammable , is a low-cost sensors for a variety of applications .
Speciffications
1. It adopts high quality double panel design with power indication and TTL signal output indication;
2. It has DO switch signal (TTL) output and AO analog signal output;
3. The TTL output valid signal is low. (When the output is low, the signal light is on, it can be directly connected to the MCU or relay module)
4. The voltage of the analog output, the higher the concentration, the higher the voltage.
5. It has good sensitivity to gas and natural gas detection.
6, there are four screw holes for easy positioning;
7, product dimensions:32 (L) * 20 (W) * 22 (H)
8, has a long service life and reliable stability
9, fast response recovery characteristics
Electrical Performance
Dection of gas:Carbon monoxide flammable gas
Dection of Concentration:10-1000ppm(CO);100-10000(Gas) ppm
Input voltage:DC5V
Power consumption (current):150mA
DO output:TTL digital quantities 0 and 1 (0.1 and 5V)
AO output:0.1-0.3V (relatively non-polluting), the highest concentration voltage is about 4V
Using the chip:AT89S52
Crystal:11.0592MHZ
Baud rate:9600
Compilation environment:Keil
Special Reminder
After the sensor is energized, it needs to be preheated for about 20S, and the measured data is stable. The heating of the sensor is a normal phenomenon, because there is a heating wire inside, if it is hot, it is not normal.
Package Included
1 x MQ-9 Gas Sensor Module
If you want another model, you can click on the ID
Model
Gas Detection
Item ID
MQ2
flammable gas/smoke
1144079
MQ3
alcohol steam
1414301
MQ4
Natural gas/Methane
1377624
MQ5
Liquefied gas/Methane/Coal gas /LPG
1378464
MQ6
Liquefied gas/Isobutane/Propane/LPG
1378477
MQ7
Carbon monoxide
915474
MQ8
hydrogen
1378425
MQ9
Carbon monoxide flammable gas
1378463
MQ131
Ozone Concentration
1183257
MQ135
Ammonia/sulfide/benzene vapor
1378465
A set of MQ
1005800
Additional information
| Weight | 0.007 kg |
|---|
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