Product Description
The MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module can detect gas leaks in homes and industries. It can sense H2, LPG, CH4, CO, Alcohol, Smoke or Propane. It has high sensitivity and fast response time, so it can measure gas levels quickly. The sensor’s sensitivity can be adjusted by the potentiometer.
The MQ-2 Gas sensor uses Tin oxide (SnO2), a gas sensitive material that has low conductivity in clean air. When the sensor is exposed to flammable gases, its conductivity increases with the concentration of the gas in the air.
A simple circuit converts the changes in conductivity to an output signal that corresponds to the gas concentration.
The MQ-2 Gas sensor is highly sensitive to liquefied petroleum gas, propane, hydrogen, and other combustible vapors. It is a low-cost sensor that can be used for many applications.
Features
- Good sensitivity to Combustible gas in a wide range
- High sensitivity to LPG, Propane, and Hydrogen
- Long life and low cost
- Simple drive circuit
- Can be used as a Digital or analog sensor.
- The Sensitivity of Digital pin can be varied using the potentiometer.
- Can be used to Measure or detect LPG, Alcohol, Propane, Hydrogen, CO and even methane.
Following Conditions Must Be Avoided
Water Condensation
Indoor conditions, slight water condensation will affect sensors performance lightly. However, if water condensation on sensors surfaces and keep a certain period, sensor’ sensitivity will be decreased.
Used in High Gas Concentration
No matter the sensor is electrified or not if long time placed in high gas concentration it will affect sensors characteristic.
Longtime Storage
The sensor’s resistance produces reversible drift if it’s stored for a long time without electrify, this drift is related to storage conditions. Sensors should be stored in airproof without silicon gel bag with clean air. For the sensors with long time storage but no electrify, they need long aging time for stability before using.
Longtime Exposed to an Adverse Environment
No matter the sensors electrified or not, if exposed to the adverse environment for a long time, such as high humidity, high temperature, or high pollution etc., it will affect the performance of the sensor badly.
Vibration
Continual vibration will result in sensors down-lead response then rapture. In transportation or assembling line, pneumatic screwdriver/ultrasonic welding machine can lead to this vibration.
Concussion
If sensors meet strong concussion, it may lead its lead wire disconnected.
Application:
- The domestic gas leakage detector
- Industrial Combustible gas detector
- Portable gas detector
Package Includes :
- 1 x MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module
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