GAS SENSOR
HANWEI ELECTRONICS CO.,LTD
MQ-5
TECHNICAL DATA
http://www.hwsensor.com
MQ-5 GAS SENSOR
FEATURES
* High sensitivity ...
Description
HANWEI ELECTRONICS CO.,LTD
MQ-5
TECHNICAL DATA
http://www.hwsensor.com
MQ-5 GAS SENSOR
FEATURES
* High sensitivity to LPG, natural gas , town gas
* Small sensitivity to alcohol, smoke.
* Fast response . * Stable and long life * Simple drive circuit
APPLICATION
They are used in gas leakage detecting equipments in family and industry, are suitable for detecting of
LPG, natural gas , town gas, avoid the noise of alcohol and cooking fumes and cigarette smoke.
SPECIFICATIONS
A. Standard work condition
Symbol
Parameter name
Vc Circuit voltage
VH Heating voltage
PL Load resistance
RH Heater resistance
PH Heating consumption
B. Environment condition
Technical condition 5V±0.1 5V±0.1 20KΩ
31±10%
less than 800mw
Remarks AC OR DC ACOR DC
Room Tem
Symbol Tao
Parameter name Using Tem
Technical condition -10℃-50℃
Remarks
Tas Storage Tem
-20℃-70℃
RH Related humidity
less than 95%Rh
O2
Oxygen concentration
21%(standard condition)Oxygen
minimum value is
concentration can affect sensitivity over 2%
C. Sensitivity characteristic
Symbol
Rs
α (5000ppm/1000 ppm CH4) Standard detecting condition
Parameter name Sensing Resistance
Technical parameter 10KΩ- 60KΩ
(5000ppm methane )
Concentration slope rate
≤0.6
Temp: 20℃±2℃ Vc:5V±0.1 Humidity: 65%±5% Vh: 5V±0.1
Remarks
Detecting concentration scope: 200-10000ppm LPG,LNG
Natural gas, iso-butane, propane Town gas
Preheat time
Over 24 hour
D. Strucyure and configuration, basic measuring circuit
Parts 1 Gas se...
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