MQ-2B Smoke Sensor Liquefied Gas Hydrogen Detection Probe Combustible Gas Alarm Smoke Sensing Element

             MQ-2B Smoke Sensor Liquefied Gas Hydrogen Detection Probe Combustible Gas Alarm Smoke Sensing Element

Basic Overview:

The MQ - 2B gas sensor adopts tin dioxide (SnO2) as its gas - sensitive material. This material has low conductivity when exposed to clean air. When flammable gases or smoke appear in the surrounding environment, the conductivity of the sensor will increase as the concentration of the target substances rises. By connecting the sensor to a simple circuit, the change in its conductivity can be converted into an output signal that corresponds to the concentration of the detected gas or smoke, so as to achieve the purpose of gas concentration detection.

Core Features:

1. Outstanding Target Detection Sensitivity: It has high sensitivity to propane and smoke. Besides, it can also effectively detect natural gas and other flammable vapors, which enables it to meet the detection needs of multiple common flammable gases.
2. Cost - effective and Practical: It has the advantage of low production cost. Meanwhile, it only needs to be matched with a simple driving circuit to work normally, which greatly reduces the overall cost of the equipment it is applied to.
3. Long Service Life: With a long service life of up to 10 years, it can maintain stable performance during long - term use, reducing the frequency of sensor replacement for related equipment.
4. Flexible Voltage Adaptability: The loop voltage can be as high as 24V DC, and the heating voltage is stably controlled at 5.0V ± 0.1V (either AC or DC). This voltage range makes it compatible with various power supply systems in different application scenarios.

Typical Applications:

It is widely used in various gas detection equipment. It is a core component in household gas leakage alarms, which can timely warn of gas leakage risks. In industrial settings, it is applied to industrial flammable gas alarms to ensure the safety of the production site. Additionally, it is also suitable for portable gas detectors, facilitating on - site and mobile gas detection work.