MQ-135 Gas Sensor Module

MQ-135 Gas Sensor ModuleMQ-135 gas sensor module has high sensitivity to ammonia gas, sulfide, benzene series steam, also can monitor smoke and other toxic gases well. It can detect kinds of toxic gases and is a kind of low-cost sensor for kinds of applications.MQ-135 Sensor FeaturesWide detecting scopeFast response and High sensitivityStable and long lifeOperating Voltage is 5VDetect/Measure NH3, NOx, alcohol, Benzene, smoke, CO2, etc.Analog output voltage: 0V to 5VDigital output voltage: 0V or 5V (TTL Logic)Preheat duration 20 secondsCan be used as a Digital or analog sensorThe Sensitivity of Digital pin can be varied using the potentiometerRelated video:  MQ-135 Gas Sensor Module What are MQ sensors?Introduction. MQ gas sensors are a family of sensors which are used to detect a wide variety of gases like alcohol, smoke, methane, LPG, hydrogen, NH3, Benzene, Propane etc. These sensors are made up of electrode which is coated with a sensing material, and it is heated to make it more reactive and sensitive.Does MQ135 detect CO2?Yes. This sensor can be used to measure accurate CO2 in the air.How do you calibrate a MQ-135 sensor?While using the library-supported Arduino setup, MQ-135 gas sensor calibration is done at first by finding the value of Ro in fresh air, and then using that value to find Rs through the formula: Rs = (Vcc/VRL-1)x RL, that means Rs = (5V/(sensorValue * (5.0/1023.0))-1)*RL.Where should gas detectors be placed?Sensors should be located near the floor for gases or vapors three or four times heavier than air. They should be installed near the ceiling or roof to detect lighter-than-air gases.Alternative MQ Gas sensors –Sensor NameGas to measureMQ-2Methane, Butane, LPG, SmokeMQ-3Alcohol, Ethanol, SmokeMQ-4Methane, CNG GasMQ-5Natural gas, LPGMQ-6LPG, butaneMQ-7Carbon MonoxideMQ-8Hydrogen GasMQ-9Carbon Monoxide, flammable gassesMQ131OzoneMQ135Air QualityMQ136Hydrogen Sulphide gasMQ137AmmoniaMQ138Benzene, Toluene, Alcohol, Propane, Formaldehyde gas, HydrogenMQ214Methane, Natural GasMQ216Natural gas, Coal GasMQ303AAlcohol, Ethanol, smokeMQ306ALPG, butaneMQ307ACarbon MonoxideMQ309ACarbon Monoxide, flammable gasAlso, do not forget to check out our other Gas / Air modules in the Gas & Air section.MQ-135 গ্যাস সেন্সর মডিউলটির অ্যামোনিয়া গ্যাস, সালফাইড, বেনজিন সিরিজের বাষ্পের প্রতি উচ্চ সংবেদনশীলতা রয়েছে, এছাড়াও ধোঁয়া এবং অন্যান্য বিষাক্ত গ্যাসগুলি ভালভাবে নিরীক্ষণ করতে পারে। এটি বিভিন্ন ধরণের বিষাক্ত গ্যাস সনাক্ত করতে পারে এবং এটি বিভিন্ন ধরণের অ্যাপ্লিকেশনের জন্য কম খরচের সেন্সর।MQ-135 Gas Sensor Module best price in Bangladesh (BD)