Transcription of TECHNICAL DATA MQ-135 GAS SENSOR - Olimex
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TECHNICAL DATA MQ-135 GAS SENSOR - Olimex
TECHNICAL DATA MQ-135 GAS SENSOR FEATURES Wide detecting scope Fast response and High sensitivity Stable and long life Simple drive circuit APPLICATION They are used in air quality control equipments for buildings/offices, are suitable for detecting of NH3,NOx, alcohol, Benzene, smoke,CO2 ,etc. SPECIFICATIONS A. Standard work conditionSymbolParameter nameTechnical conditionRemarks VcCircuit voltage5V OR DC VHHeating voltage5V DC RLLoad resistancecan adjust RHHeater resistance33 5%Room Tem PHHeating consumptionless than 800mw B. Environment conditionSymbolParameter nameTechnical conditionRemarks TaoUsing Tem-10 -45 TasStorage Tem-20 -70 RHRelated humidityless than 95%Rh O2 Oxygen concentration21%(standard condition)Oxygenconcentration can affect sensitivityminimum value isover 2% C.
Structure and configuration of MQ-135 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 provides necessary work conditions for work of sensitive Parts ...
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