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MQ-5

HANWEI ELETRONICS
Part Number MQ-5
Manufacturer HANWEI ELETRONICS
Description GAS SENSOR
Published Feb 25, 2015
Detailed Description HANWEI ELECTRONICS CO.,LTD MQ-5 TECHNICAL DATA http://www.hwsensor.com MQ-5 GAS SENSOR FEATURES * High sensitivity ...
Datasheet PDF File MQ-5 PDF File

MQ-5
MQ-5

Overview
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 sensing layer 2 Electrode 3 Electrode line 4 Heater coil 5 Tubular ceramic 6 Anti-explosion network 7 Clamp ring 8 Resin base 9 Tube Pin Materials SnO2 Au Pt Ni-Cr alloy Al2O3 Stainless steel gauze (SUS316 100-mesh) Copper plating Ni Bakelite Copper plating Ni Configuration A Fig.
1 Configuration B Fig.
2 A A Structure and configuration of MQ-5 gas sensor is shown as Fig.
1 (Configuration A or B), sensor composed by TEL: 86-371- 67169070 67169080 FAX: 86-371-67169090 E-mail: sales@hwsensor.
...


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