Suitable for home or factory methane gas , natural gas and other monitoring devices to test natural gas, methane 300 to 10000ppm;
Module Features :
Using high-quality dual-panel design, with power indicator and TTL signal output instructions ;
The switching signal having a DO (TTL) output and analog output AO ;
TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
The higher the voltage , the concentration of the analog output voltage is higher.
For methane, natural gas has a good detection sensitivity.
There are four screw holes for easy positioning ;
Dimensions : 32 (L) * 20 (W) * 22 (H)
Rapid response and recovery characteristics
Input voltage: DC5V Power consumption ( current ): 150mA
DO output: TTL digital 0 and 1 ( 0.1 and 5V)
AO output:0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V
Special note: After the sensor is power on, it needs to be warmed up around 20S, measured data can be stable , sensor become warm is a normal phenomenon.
Instruction of Wiring:
VCC: positive power supply (5V)
GND: power supply is negative
DO: TTL switching signal output
AO: analog signal output