MQ-8 Keyestudio hydrogen sensor for Arduino

The sensitivity of MQ-8 gas sensor to hydrogen is quite high, it can also detect a variety of other gases containing hydrogen. This sensor is suitable for a variety of applications.

Specifications:

• Detectable concentration: 100-1000ppm (hydrogen)
• Operating voltage: 5V
• Heating voltage VH: 5.0V±0.1V AC or DC
• Load resistance RL: adjustable
• Heating resistance RH: 29±3Ω(Room temperature)
• Heating power: PH ≤900mW
• Sensitivity S: Rs(in air)/Rs(1000ppm H2)≥5
• Output voltage Vs: 2.5-4.0V（1000ppm H2）
• Concentration slope: α≤0.6(R1000ppm/R400ppm H2)
• Temperature ; humidity: 20℃±2℃；55%±5%RH
• Standard test circuit: Vc:5.0V±0.1V；VH: 5.0V±0.1V

Wiki

Sample Code