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HANWEI ELETRONICS CO.,LTD
MQ-9
http://www.hwsensor.com
TECHNICAL DATA
MQ-9 GAS SENSOR
FEATURES * High sensitivity to carbon monoxide and CH4，LPG.
* Stable and long life
APPLICATION They are used in gas detecting equipment for carbon monoxide and CH4，LPG in family
and industry or car.
SPECIFICATIONS
A. Standard work condition
Symbol Vc VH (H) VH (L)
Parameter name circuit voltage Heating voltage (high) Heating voltage (low)
technical condition 5V±0.1 5V±0.1 1.4V±0.1
Remark AC or DC AC or DC AC or DC
RL Load resistance
Can adjust
RH TH (H) TH (L)
Heating resistance Heating time (high) Heating time (low)
33Ω ±5% 60±1 seconds 90±1 seconds
Room temperature
Ps Heating consumption Less than 340mw
b.
MQ-9 Datasheet
