MQ-8 hydrogen gas sensor can detecting of Hydrogen (H2), avoid the noise of alcohol and cooking fumes, LPG, CO.
MQ-8 hydrogen gas sensor with Stable and long life
FEATURES
1. High sensitivity to Hydrogen (H2)
2. Small sensitivity to alcohol, LPG, cooking fumes
3. Stable and long life
SPECIFICATIONS
A. Standard work condition
Symbol | Parameter name | Technical condition | Remarks |
Vc | Circuit voltage | 5V±0.1 | AC OR DC |
VH | Heating voltage | 5V±0.1 | ACOR DC |
PL | Load resistance | 10KΩ |
|
RH | Heater resistance | 31±5% | Room Tem |
PH | Heating consumption | less than 800mW |
|
B. Environment condition
Symbol | Parameter name | Technical condition | Remarks |
Tao | Using Tem | -10°C-50°C |
|
Tas | Storage Tem | -20°C-70°C | |
RH | Related humidity | less than 95%Rh | |
O2 | Oxygen concentration | 21%(standard condition)Oxygen concentration can affect sensitivity | minimum value is over 2% |
C. Sensitivity characteristic
Symbol | Parameter name | Technical parameter | Remark 2 |
Rs | Sensing Resistance | 10KΩ- 60KΩ (1000ppm H2) | Detecting concentration scope: 100-10000ppm Hydrogen (H2) |
α (1000ppm/ 500ppmH2) |
Concentration slope rate |
≤0.6 | |
Standard detecting condition | Temp: 20°C±2°C Vc:5V±0.1 Humidity: 65%±5% Vh: 5V±0.1 | ||
Preheat time | Over 24 hour | ||
