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GSM SIM 800L TTL Board
1 × ₹200.00
Subtotal: ₹200.00
Sensor Boards And Modules
MQ 4 Gas Sensor Module
MQ 4 Gas Sensor Module – Reliable Methane Detection!
The MQ 4 gas sensor module is designed to detect methane gas (CH4) and natural gas. It operates at 5V DC and provides both analog and digital outputs. With a detection range of 300 to 10,000 ppm, it’s perfect for gas leak detection, safety systems, and environmental monitoring.
₹85.00 exc. GST
The MQ 4 gas sensor module is designed to detect the presence of methane gas (CH4) and natural gas. Here’s a detailed description:
Working Principle:
The MQ 4 gas sensor module is a metal oxide semiconductor (MOS) type sensor, also known as a chemiresistor. It contains a sensing material, typically tin dioxide (SnO2), which changes its resistance when exposed to methane gas. When the sensor is heated, oxygen molecules adsorb on the surface of the sensing material1. In the presence of methane gas, these oxygen molecules react with the gas, reducing the surface density of adsorbed oxygen and allowing current to flow through the sensor. The resulting analog voltage values are measured to determine the concentration of methane gas1.
Key Features:
Operating Voltage: 5V DC
Detection Range: 300 to 10,000 ppm (parts per million)
Output: Analog voltage (0-5V) and digital output (TTL logic)
Preheat Duration: Approximately 24 hours
Sensitivity: Can be adjusted using a potentiometer
Applications:
Gas Leak Detection: Used in homes and industries to detect methane gas leaks.
Environmental Monitoring: Monitoring air quality in various environments.
Safety Systems: Ensuring safety in sensitive environments like laboratories.
Limitations:
Non-Specific: The MQ-4 sensor cannot distinguish between different gases; it only detects methane gas.
Accuracy: While effective for detecting gas presence, it is not suitable for precise measurement of gas concentrations without additional calibration
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