MQ-135 Gas Sensor Module

MQ-135 Gas Sensor Module

MQ-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 Features

• Wide detecting scope
• Fast response and High sensitivity
• Stable and long life
• Operating Voltage is +5V
• Detect/Measure NH3, NOx, alcohol, Benzene, smoke, CO2, etc.
• Analog output voltage: 0V to 5V
• Digital output voltage: 0V or 5V (TTL Logic)
• Preheat duration 20 seconds
• Can be used as a Digital or analog sensor
• The Sensitivity of Digital pin can be varied using the potentiometer

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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.

Also, 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)