| Price | $3 |
|---|---|
| Category | Sensors |
| Availability | In stock |
| Delivery | Shipped across Lebanon, or collect from the lab |
The hydrogen member of the MQ family, on the same blue 4-pin module. It reads 100 to 1000 ppm of H2 with at least a five-to-one resistance change between clean air and 1000 ppm, and rejects the other gases that confuse general-purpose sensors - useful around battery banks, electrolysers and fuel-cell rigs. A0 tracks concentration, D0 trips at the trim pot setting.
Key features
- 100 to 1000 ppm hydrogen (H2)
- At least 5:1 resistance change from clean air to 1000 ppm
- Good rejection of other gases
- Analog A0 plus threshold digital D0 with trim pot
- 5V heater, up to 900 mW - runs warm
- For battery rooms, electrolysers and fuel-cell rigs
Details
Specifications
| Model | MQ-8 |
|---|---|
| Type | Tin-oxide (SnO2) semiconductor gas sensor on a breakout module |
| Detects | Hydrogen (H2) |
| Detection range | 100 to 1000 ppm |
| Heater voltage | 5.0V plus or minus 0.1V |
| Heater resistance | 29 ohms plus or minus 3 ohms |
| Heater consumption | less than 900 mW |
| Sensitivity | Rs(air) / Rs(1000 ppm H2) greater than or equal to 5 |
| Output | Analog (A0) + digital threshold (D0, LM393 + trim pot) |
| Operating voltage | 5V DC |
| Preheat | 48 h for calibrated readings |
