Leobot Electronics South Africa - Low Cost Arduino & Electronic Component Supplier based in Waverley, Pretoria, South Africa.
Leobot Electronics Online Shop
R38.95
The MQ series of gas sensors use a small heater inside with an electro-chemical sensor. They are sensitive for a range of gasses and are used indoors at room temperature.
They can be calibrated more or less (see the section about "Load-resistor" and "Burn-in") but a know concentration of the measured gas or gasses is needed for that.
The output is an analog signal and can be read with an analog input of the Arduino.
They are used in gas leakage detecting equipments in family and industry, are suitable for detecting of CH4,Natural gas.LNG, avoid the noise of alcohol and cooking fumes and cigarette smoke.
Vc Circuit voltage 5V±0.1 AC OR DC
VH Heating voltage 5V±0.1 ACOR DC PL
Load resistance 20KΩ RH
Heater resistance 33Ω±5% R
N/A
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MQ-7 Carbon Monoxide (CO) Gas Sensor Module
R52.00
MQ-2 Smoke/Liquefied-Flammable Gas Sensor Module
R41.95
MQ-8 Hydrogen Gas Sensor Module
MQ-4 LPG Methane/Hydrogen Gas Sensor Module
R81.30
MQ-3 Alcohol/Ethanol Sensor Module
MQ-9 Combustible Gas (Carbon Monoxide, Methane and LPG) Sensor Module
R52.20
MQ Gas Sensor Carrier Board
R26.00
MQ-4 GAS SENSOR (METHANE & NATURAL GAS)
MQ-7 GAS SENSOR (CARBON MONOXIDE)
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