SparkFun
LPG Gas Sensor - MQ-6
A simple-to-use MQ-6 gas sensor for detecting liquefied petroleum gas (LPG) — primarily propane and butane — in the air. The sensor detects concentrations fr...
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A simple-to-use MQ-6 gas sensor for detecting liquefied petroleum gas (LPG) — primarily propane and butane — in the air. The sensor detects concentrations from 200 to 10,000 ppm with high sensitivity and fast response time.
The MQ-6 outputs an analog resistance that varies with gas concentration. The drive circuit is straightforward: power the heater coil with 5 V, add a load resistor, and read the output with an ADC on your microcontroller.
Key Features
- LPG Detection – Sensitive to propane, butane, and other LPG components
- Wide Detection Range – 200 to 10,000 ppm
- Fast Response Time – Quick detection of gas concentration changes
- Analog Output – Simple resistive output for ADC reading
- Simple Drive Circuit – 5 V heater coil + load resistor
Specifications
- Target Gas: LPG (propane, butane)
- Detection Range: 200–10,000 ppm
- Heater Voltage: 5 V DC
- Output: Analog resistance
Ideal For
- LPG leak detection systems
- Gas monitoring and safety alarms
- Air quality monitoring projects
Package Contents
- 1× MQ-6 LPG Gas Sensor
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- ppm
- ppm means parts per million, a common way to express very small gas concentrations in air. For CO₂ sensors, the ppm range tells you what levels the sensor can measure, such as normal indoor air through to poorly ventilated spaces.
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MQ-6 Gas Sensor Datasheet
Datasheet · 452.8 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 528.8 KB · Click any page to view full size
Related Tutorials
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