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PDF MQ-9 Data sheet ( Hoja de datos )
| Número de pieza | MQ-9 | |
| Descripción | GAS SENSOR | |
| Fabricantes | HANWEI ELETRONICS | |
| Logotipo |  |
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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. Environment conditions
Symbol
Tao
Tas
RH
O2
Parameters
Using temperature
Storage temperature
Relative humidity
Oxygen concentration
c. Sensitivity characteristic
Technical conditions
-20℃…+50℃
-20℃…+50℃
Less than 95%RH
21%(stand condition)
the oxygen concentration can
affect the sensitivity
characteristic
Remark
Advice using scope
Minimum value is over 2%
symbol
Rs
а
(300/100ppm)
Standard working
condition
Preheat time
Parameters
Surface resistance
Of sensitive body
Concentration slope rate
Technical parameters
2-20k
Less than 0.5
Remark
In 100ppm
Carbon Monoxide
Rs (300ppm)/Rs(100ppm)
Temperature -20℃±2℃ relative humidity 65%±5% RL:10KΩ ±5%
Vc:5V±0.1V VH:5V±0.1V VH:1.4V±0.1V
No less than 48 hours
Detecting range:20ppm-2000ppm carbon monoxide
500ppm-10000ppm CH4
500ppm-10000ppm LPG
D. Structure and configuration, basic measuring circuit
Structure and configuration of MQ-9 gas sensor is shown as Fig. 1 (Configuration A or B),
sensor composed by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring
electrode and heater are fixed into a crust made by plastic and stainless steel net. The heater
TEL: 86-371- 67169070 67169080 FAX: 86-371-67169090
E-mail: [email protected]
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| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet MQ-9.PDF ] | |
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