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Pololu 1481 - LPG / Isobutane / Propane Gas Sensor MQ-6
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  • Pololu 1481 - LPG / Isobutane / Propane Gas Sensor MQ-6
ID: 196148

LPG / Isobutane / Propane Gas Sensor MQ-6

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LPG / Isobutane / Propane Gas Sensor MQ-6

This semiconductor gas sensor detects the presence of LPG, isobutane, and propane at concentrations from 300 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.

Overview

This propane gas sensor detects the concentrations of LPG, isobutane, and propane in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of 300 to 10,000 ppm.The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5 V. Please read the MQ6 datasheet (178k pdf) for more information about the sensor.

Gas sensor with metal case bottom view.

Connections

Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector. Please note that the picture in the datasheet for the top configuration is wrong. Both configurations have the same pinout consistent with the bottom configuration.The resistive load should be calibrated for your particular application using the equations in the datasheet, but a good starting value for the resistor is 20 kΩ.

We offer two breakout boards that make it easier to interface with these sensors: a Pololu carrier board and a SparkFun carrier board. The Pololu version is shown below.

Pololu MQ gas sensor carrier with sensitivity-setting resistor soldered in the vertical orientation.

People often buy this product together with:

Pololu MQ Gas Sensor Carrier Pololu MQ Gas Sensor Carrier
Flammable Gas & Smoke Sensor MQ-2 Flammable Gas & Smoke Sensor MQ-2
Carbon Monoxide Gas Sensor MQ-7 Carbon Monoxide Gas Sensor MQ-7
196148

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