MQ4 methane gas sensor is a MOS (metal oxide semiconductor) type sensor, used to detect the methane gas concentration within the air at either home or industries & generates output like analog voltage by reading it. Here, the range of concentration for sensing ranges from 300 pm – 10,000 ppm which is appropriate for the detection of a leak.
Sensitivity is good for combustible gas in an extensive range
Sigh sensitivity for natural gas, methane gas
Small sensitivity for smoke and alcohol
Quick responsive, long life and stable
The drive circuit is simple
Load resistance is 20KΩ
Detecting resistance ranges from 10KΩ to 60KΩ
Preheat time is above 24Hrs
The required voltage is 5V
DO output: is 0.1 to 5V
AO output is 0.1 to 0 .3 V
Detection gas is methane or natural
The concentration of detection ranges from 200 to 10000ppm
Interface : TTL compatible input & output
Heater utilization is low than 750mw
Operating temperature ranges from 14 to 122 ° Fahrenheit or -10 to 50°Centigrade
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