Specifications and Features:
- Dimensions: 36 x 20 x 21 mm(LxWxH)
- Weight:8 gm
- Operating Voltage is +5V
- Can be used to Measure or detect LPG, Alcohol, Propane, Hydrogen, CO, and even methane
- 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 the Digital pin can be varied using the potentiometer
Character Configuration:
- Good sensitivity to Combustible gas in a wide range
- High sensitivity to LPG, Propane, and Hydrogen
- Long life and low cost
- Simple drive circuit
Application:
- Domestic gas leakage detector
- Industrial Combustible gas detector
- Portable gas detector
Electronic Characteristics:
| Items | Parameter name | Min | Type | Max | Unit |
| System Characteristics | |||||
| VCC | Working Voltage | 4.9 | 5 | 5.1 | V |
| PH | Heating consumption | 0.5 | – | 800 | mW |
| RL | Load resistance | can adjust | |||
| RH | Heater resistance | – | 33 | – | Ω |
| Rs | Sensing Resistance | 3 | – | 30 | kΩ |
Following conditions must be avoided:
Water Condensation
Indoor conditions, slight water condensation will affect sensors’ performance lightly. However, if water condensation on the surfaces of the sensor and keeps a certain period, the sensor’s sensitivity will be decreased.
Used in high gas concentration
No matter the sensor is electrified or not if a long time placed in high gas concentration it will affect the sensor’s characteristic.
Long time storage
The sensor’s resistance produces reversible drift if it’s stored for a long time without electrifying, this drift is related to storage conditions. Sensors should be stored in an airproof without silicone gel bag with clean air. For the sensors with long time storage but no electrify, they need a long aging time for stability before using.
Long time exposed to adverse environment
No matter the sensors electrified or not, if exposed to adverse environments 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 lines, a pneumatic screwdriver/ultrasonic welding machine can lead to this vibration.
Concussion
If sensors meet strong concussion, it may lead its lead wire disconnected.
Package Includes:
- 1 x MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module in Pakistan
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