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Technical Parameters
Working Voltage
Working Current
Gas Detection
Detection Concentration
Zero Voltage
Preheating Time
Response Time
Recovery Time
Output Mode
Work environment
Electrical Diagram
VCC is the 0 5 VDC power supply positive and negative; GND is the ground
Aout is the analog output, Dout is the level output
On the PCB, Indicator light on: Dout is low level. Indicator light off: Dout is high level
The 1k resistor shown on the PCBA is the load resistance (RL), it can be changed by user. Due to the sensor itself the load resistance range
should be 100k 1M.
Mounting Diagram
Mount the PCBA to the enclosure with screws. Hole diameter 3mm, pitch distances as per the diagrams given below.
Liquefied gas, methane, butane, LPG
0.5 1.5 V (This voltage is output without CH4)
Aout (Analog)
Dout (Level signal)
Temperature
Humidity
2
5 VDC ± 0.2 V
<150 mA
300 10000ppm (CH4 LPG)
>30 mins
>3 sec
≤60 sec
Non-linear, higher the concentration, higher the voltage
Low level: 0V; High level: 3.7V
-10~50 °C
＜95% RH
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