Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-8 hydrogen gas sensor of high sensitivity, the monitoring of the other hydrogen-containing gas is also very satisfactory.
This sensor can detect a wide range of hydrogen gas, city gas, in particular, is a low-cost sensor for a variety of applications.
Suitable for home or industrial hydrogen leakage monitoring devices. Can not interfere with ethanol vapor, soot, carbon monoxide, and other gases.
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 directly connect to the microcontroller or relay module )
The higher the voltage, the concentration of the analog output voltage is higher.
A hydrogen gas detection with good sensitivity.
There are four screw holes for easy positioning.
Has a long life and reliable stability
Rapid response and recovery characteristics
Specification
| Operating Voltage (VDC) | 5 |
| Current Consumption(mA) | 150 |
| Do output | TTL digital 0 and 1 ( 0.1 and 5V) |
| Ao output | 0.1-0 .3 V (Relative to Pollution ) |
| Length (mm) | 32 |
| Width (mm) | 20 |
| Height (mm) | 21.5 |
| Weight (gm) | 7 |
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