MQ-8

HANWEI ELETRONICS CO.,LTD MQ-8 http://www.hwsensor.com TECHNICAL DATA MQ-8 GAS SENSOR FEATURES * High sensitivity to Hydrogen (H2) * Small sensitivity to alcohol, LPG,cooking fumes * Stable and long life APPLICATION They are used in gas leakage detecting equipments in family and industry, are suitable for detecting of Hydrogen (H2), avoid the noise of alcohol and cooking fumes, LPG,CO. SPECIFICATIONS A. Standard work condition Symbol Parameter name Technical condition Remarks Vc Circuit voltage 5V±0.1 AC OR DC VH Heating voltage PL Load resistance RH Heater resistance 5V±0.1 10KΩ 31±5% ACOR DC Room Tem PH Heating consumption B. Environment condition less than800mW 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 Parameter name Sensing Resistance Technical parameter 10KΩ- 60KΩ (1000ppm H2) Ramark 2 Detecting concentration scope： 100-10000ppm α (1000ppm/ Concentration slope rate ≤0.6 Hydrogen (H2) 500ppmH2) Standard detecting condition Temp: 20℃±2℃ Vc:5V±0.1 Humidity: 65%±5% Vh: 5V±0.1 Preheat time Over 24 hour D. Structure 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...