MQ4 GAS SENSOR
The MQ-4 gas sensor is widely used for detecting methane (CH₄) and other flammable gases.
Features
Sensitivity: Detects methane (natural gas) concentrations from 300 to 10,000 ppm.
Operating Voltage: Typically requires 5V.
Output Signal: Provides an analog voltage output proportional to the gas concentration.
Response Time: Fast response and recovery time, suitable for real-time applications.
Specifications: MQ4 sensor Module
Load resistance: 20KΩ
Detecting resistance: 10KΩ to 60KΩ
Preheat time: above 24Hrs
Required voltage: 5V
DO output: 0.1 to 5V
AO output: 0.1 to 0.3V
Operating temperature: 14 °C to 122 °C
Power Supply Voltage: 5V (DC)
Working Current: Typically around 150 mA (during heating)
Sensitivity Range:
Methane: 300 to 10,000 ppm
LPG: 300 to 10,000 ppm
Response Time: Generally less than 10 seconds
Recovery Time: Approximately 30 seconds
Operating Temperature: -20°C to +50°C
Operating Humidity: 5% to 95% (non-condensing)
Dimensions: Approximately 32 mm x 20 mm x 12 mm
Applications
Home Safety: Detecting gas leaks in residential areas.
Industrial Monitoring: Used in factories and labs to monitor gas levels.
Environmental Monitoring: Applications in air quality monitoring systems.
Automotive: Integrated into vehicles for detecting fuel leaks.