Discover the MQ-3 Gas Sensor Module, a reliable component for detecting alcohol levels in various applications in Bangladesh. Operating at 5VDC, it features both digital and analog outputs, making it ideal for integrating with microcontrollers and DIY projects.
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The MQ-3 Gas Sensor Module is a versatile and efficient component designed for detecting alcohol concentrations in the air. Operating at 5VDC, this sensor module consumes approximately 165mA with the heater on and 60mA with the heater off. It provides both TTL digital outputs (0 and 1, ranging from 0.1 to 5V) and analog outputs (0.1 to 0.3V relative to pollution, with a maximum concentration voltage of about 4V). It is capable of detecting alcohol concentrations ranging from 0.05 to 10mg/L and includes one TTL compatible input (HSW) and one TTL compatible output (ALR). The heater consumption is less than 750mW, and the operating temperature ranges from -10 to 50°C (14 to 122°F). With a load resistance of 200kΩ, a sensitivity ratio of Rs(in air)/Rs(0.4mg/L Alcohol)≥5, and a sensing resistance ranging from 2KΩ to 20KΩ in 0.4mg/L alcohol, this module ensures accurate and reliable readings. Its compact dimensions of 32 x 22 x 16mm make it easy to integrate into various projects. Here’s a detailed look at its features, applications, and usage tips:
Power Requirements: 5 VDC @ ~165 mA (heater on) / ~60 mA (heater off)
Current Consumption: 150mA for efficient operation.
DO Output: TTL digital 0 and 1 (0.1 and 5V)
AO Output: 0.1-0.3V (relative to pollution), with a maximum concentration voltage of about 4V.
Detecting Concentration: 0.05-10mg/L Alcohol for accurate detection.
Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
Heater Consumption: Less than 750mW for energy efficiency.
Operating Temperature: 14 to 122 °F (-10 to 50°C) for versatile applications.
Load Resistance: 200kΩ for reliable performance.
Sensitivity: Rs(in air)/Rs(0.4mg/L Alcohol)≥5 for high sensitivity.
Sensing Resistance: 2KΩ-20KΩ (in 0.4mg/L alcohol)
Dimensions: 32 x 22 x 16 mm for compact integration.
Alcohol Detection Projects: Ideal for breathalyzer and alcohol detection devices.
Microcontroller Projects: Perfect for use with Arduino, Raspberry Pi, and other microcontrollers.
DIY Electronics: Suitable for hobbyists creating custom electronic devices.
Prototyping: Useful for developing and testing new prototypes involving gas sensors.
Wiring: Ensure proper connection to your circuit for reliable performance.
Calibration: Calibrate the sensor for accurate readings in different environments.
Maintenance: Keep the sensor clean and handle with care to maintain its sensitivity.
The package includes one MQ-3 Gas Sensor Module, a reliable and versatile component for all your gas detection projects in Bangladesh.
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