MQ-5

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...