MQ-5 Gas Sensor

Product Overview

The MQ-5 gas sensor belongs to the category of gas sensors and is commonly used for detecting a variety of gases. Its characteristics include high sensitivity, fast response time, and a long life expectancy. The sensor is typically packaged in a small module with an integrated heating element and sensing element. It is essential for detecting the presence of flammable gases in the air. The MQ-5 sensor is available in various packaging options and quantities to suit different application needs.

Specifications

Operating Voltage: 5V DC
Power Consumption: 150mW
Sensing Resistance: 2KΩ to 20KΩ in 100ppm LPG
Sensitivity: >300ppm LPG
Response Time: <10s
Recovery Time: <30s
Heater Resistance: 31Ω ± 3Ω

Detailed Pin Configuration

The MQ-5 gas sensor typically has 6 pins: 1. VCC (5V) 2. GND (Ground) 3. DOUT (Digital Output) 4. AOUT (Analog Output) 5. H (Heater) 6. B (Buzzer)

Functional Features

High sensitivity to multiple gases
Fast response time
Stable and long-term performance
Low power consumption

Advantages and Disadvantages

Advantages

Versatile gas detection capabilities
Reliable performance
Low maintenance requirements
Cost-effective solution for gas detection

Disadvantages

Limited to specific types of gases
Requires calibration for accurate readings
Susceptible to environmental factors

Working Principles

The MQ-5 gas sensor operates on the principle of resistance change when exposed to target gases. The sensor's heating element raises the temperature of the sensing layer, causing its resistance to change in the presence of the target gas. This change in resistance is then converted into an electrical signal for gas detection.

Detailed Application Field Plans

The MQ-5 gas sensor finds extensive applications in various fields, including: - Industrial safety systems - Domestic gas leakage detection - Environmental monitoring - Automotive exhaust detection - Portable gas detectors

Detailed and Complete Alternative Models

Some alternative models to the MQ-5 gas sensor include: - MQ-2: Detects multiple gases including LPG, butane, and propane - MQ-7: Specialized for carbon monoxide detection - MQ-9: Designed for detecting carbon monoxide and flammable gases

In conclusion, the MQ-5 gas sensor offers reliable gas detection capabilities with its high sensitivity and fast response time. While it has certain limitations, its cost-effectiveness and versatility make it a popular choice for various gas detection applications.

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