How to choose a gas sensor ?The Grove - Gas Sensor module is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, somke and so on. Measurements can be taken as soon as possible based on its fast response time. Also the sensitivity can be adjusted by the potentiometer.There are different gas detectors for sale, like MQ2, MQ3, MQ5 and MQ9. Below is a contrast table of them.Sysmbol MQ-2 MQ-3 MQ-5 MQ-9Detect Gas Combustible Gas¡Smoke Alcohol Vapor LPG, Natural Gas, Town Gas Carbon Monoxide, Coal Gas, Liquefied GasDetect Concentration 300-10000ppm 0.04-4mg/L Alcohol 300-10000ppm 10-1000ppmCO;100-10000PPm GasFeaturesHigh sensitivity to Combustible gas in wide rangeStable performance, long life, low costFast responseWide detection rangeSimple drive circuitFor all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.NoteHot-swapping the grove may lead to IC burnout, please turn off the power of main board before swapping grove.
