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How to Choose A Gas Sensor

If you search “gas sensor” on www.seeedstudio.com , you can find a lot of gas sensor. We know that the air component is diverse, and a certain gas sensor can detect one or more air components, so we designed a series of gas sensor.

There are about 10 kind of gas sensor for sale. They have similar name, it’s likely to cause confusion. Hope that through the following presentation, we can help you to choose the appropriate gas sensor easily.

It’s obvious that different sensor can detect the same gas. Such as MQ-2, MQ-3, MQ-5 Alcohol Sensor, Grove – HCHO Sensor can detect Alcohol. So if you want an alcohol sensor, then which on should you chosen? Although most of the above sensors are able to detect Alcohol, but you should know that they have different range to Alcohol.

GasRangeProduct NameSKU
Dust0~8000pcs/0.01cfGrove-Dust Sensor101020012


CO
200~10000ppmGrove-Gas Sensor(MQ2)101020055
0.05~10ppmGrove-Gas Sensor(MQ3)101020006
200~10000ppmGrove-Gas Sensor(MQ5)101020056
20~2000ppmGrove-Gas Sensor(MQ9)101020045
0~1000ppmGrove-Multichannel Gas Sensor101020088


Alcohol
200~10000ppGrove-Gas Sensor(MQ5)101020056
100ppm~2000ppmGrove-Gas Sensor(MQ2)101020055
10~500ppmGrove-Multichannel Gas Sensor101020088
20~1000ppmGrove-Alcohol Sensor101020044
0.05~10ppmGrove-Gas Sensor(MQ3)101020006
O20~25%VOL
(0~25000ppm)
Grove-Gas Sensor(O2)101020002
HCHO5~40ppmGrove-HCHO Sensor101020001


CH4
200~10000ppmGrove-Gas Sensor(MQ5)101020056
5000~20000ppmGrove-Gas Sensor(MQ2)101020055
500~10000ppmGrove-Gas Sensor(MQ9)101020045
>1000mmpGrove-Multichannel Gas Sensor101020088
0.05~10ppmGrove-Gas Sensor(MQ3)101020006
Hexane0.05~10ppmGrove-Gas Sensor(MQ3)101020006
Propene>1000ppmGrove-Multichannel Gas Sensor101020088
200~5000ppmGrove-Gas Sensor(MQ2)101020055
Butane3000~5000ppmGrove-Gas Sensor(MQ2)101020055
Benzine0.05~10ppmGrove-Gas Sensor(MQ3)01020006

LPG
200~10000ppmGrove-Gas Sensor(MQ5)101020056
200~5000ppmGrove-Gas Sensor(MQ2)101020055
500~10000ppmGrove-Gas Sensor(MQ9)101020045
0.05~10ppmGrove-Gas Sensor(MQ3)01020006
H2300~5000ppmGrove-Gas Sensor(MQ2)101020055
1~1000ppmGrove-Multichannel Gas Sensor101020088
200~10000ppmGrove-Gas Sensor(MQ5)101020056
Smoke200~10000ppmGrove-Gas Sensor(MQ2)101020055
NO20.05~10ppmGrove-Multichannel Gas Sensor101020088
NH31~500ppmGrove-Multichannel Gas Sensor101020088
Iso-butane>1000ppmGrove-Multichannel Gas Sensor101020088
CO20~2000ppmGrove-CO2 Sensor101020067

And sometimes, we want to test many gases in one sensor, so how should we choose it ?

Product NameSKUMeasurable GasesRange





Grove-Multichannel Gas Sensor





101020088
CO0~1000ppm
Alcohol10~500ppm
CH4>1000ppm
Propane>1000ppm
NO20.05~10ppm
NH31~500p
Iso-butane>1000pm
H21~1000ppm





Grove-Gas Sensor(MQ2)





101020055
CO200~10000ppm
Alcohol100~2000ppm
CH45000^20000ppm
Propane200~5000ppm
LPG200~5000ppm
Butane3000~5000ppm
H2300~500pp
Smoke200~10000ppm



Grove-Gas Sensor(MQ3)



101020006
CO0.05~10ppm
Alcohol0.05~10ppm
CH40.05~10ppm
Hexane0.05~10ppm
Benzine0.05~10ppm
LPG0.05~10ppm


Grove-Gas Sensor(MQ5)


101020056
CO200~10000ppm
Alcohol200~10000ppm
CH4200~10000ppm
LPG200~10000ppm
H2200~10000ppm
Grove-Gas Sensor(MQ9)101020045CO20~2000ppm
CH4500~10000ppm
LPG500~10000ppm
Grove-Dust Sensor101020012Dust0~8000pcs/0.01cf
Grove-Alcohol Sensor101020044Alcohol20~1000ppm
Grove-Gas Sensor(O2)
101020002O20~25%VOL
(0~25000pp)
Grove-HCHO Sensor101020001HCHO5~40ppm
Grove-CO2 Sensor101020067CO20~200ppm

Following is the link of all gases to Bazaar, choose the one you needed!

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