TAILIEUCHUNG - MQ-135 Gas Sensor

Resistance value of MQ-135 is difference to various kinds and various concentration gases. So,When using this components, sensitivity adjustment is very necessary. we recommend that you calibrate the detector for 100ppm NH3 or 50ppm Alcohol concentration in air and use value of Load resistancethat about 20 KΩ. | 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. Standarc work condition Symbol Parameter name Technical condition Remarks Vc Circuit voltage 5V AC or DC Vh Heating voltage 5V ACOR DC Rl Load resistance can adjust Rh Heater resistance 33Q 5 Room Tem Ph Heating consumption less than 800mw B. Environment condition Symbol Parameter name Technical condition Remarks Tao Using Tem -105-455 Tas Storage Tem -205-705 Rh Related humidity less than 95 Rh O2 Oxygen concentration 21 standard condition Oxygen concentration can affect sensitivity minimum value is over 2 C. Sensitivity characteristic Symbol Parameter name Technical parameter Ramark 2 Rs Sensing Resistance 30KD-200KD 100ppm NH3 Detecting concentration scopeũ 10ppm-300ppm NH3 10ppm-1000ppm Benzene 10ppm-300ppm Alcohol a 200 50 Nil 3 Concentration Slope rate Standard Detecting Condition Temp 205 25 Vc 5V Humidity 65 5 Vh 5V Preheat time Over 24 hour D. Structure and configuration basic measuring circuit Parts Materials 1 Gas sensing layer SnO2 2 Electrode Au 3 Electrode line Pt 4 Heater coil Ni-Cr alloy 5 Tubular ceramic AJ-2O3 6 Anti-explosion network Stainless steel gauze SUS316 100-mesh 7 Clamp ring Copper plating Ni 8 Resin base Bakelite 9 Tube Pin Copper plating Ni Fig. 1 Configuration A 09 5 6-01 Configuration B 016 8 0 5 Ao t A t A 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 components. The enveloped MQ-135 have 6 pin 4 of them are used to fetch .

• Điện - Điện tử
• MQ 135 Gas Sensor
• Wide detecting scope
• Fast response
• High sensitivity Stable
• Simple drive circuit
• Gas Sensor
• Màng mỏng nhạy khí
• Gas Sensor thin film
• Thuyết trình Màng mỏng nhạy khí
• Các loại sensor
• Tính chất sensor
• Đặc tính của sensor
• Iron oxide
• NO2 gas sensor based
• QCM coated with iron oxide nanorods
• Iron oxide nanorods
• Thin film
• Hydrogen sulfide gas
• Gas sensitive properties
• X ray diffraction
• MQ 2 Semiconductor Sensor
• Combustible Gas
• Semiconductor Sensor
• Technical Data
• Basic test loop
• Sensitivity Characteristics
• Journal of Science and Technology
• Study the response of gas
• Gas sensor usin Zno nanorods synthesized
• Synthesize large quantities ZnO nanorods
• Optoelectronicand gassensing applications
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• CuO nanoplates
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• Hydrothermal synthesis of CuO nanoplates
• Metal oxide nanomaterials
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• Thanol sensor
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• kiến thức vật lý căn bản
• các dạng bài tập vật lí
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• Volatile Constituents
• Herbal Medicines
• Gas Chromatography
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• Chromatography
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• Journal of Chemistry
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• The growth of SnO2 nanorods
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• BMC Cancer
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• Exhaled breath
• Human bodies
• Scanning electron microcopy