Application guide for Figaro TGS681x gas sensors covering circuit design, PCB layout, manufacturing, calibration and storage.
This manual provides technical recommendations for designing and manufacturing gas detectors that use Figaro's TGS6810 and TGS6812 catalytic combustion sensors. It covers circuit schematics, PCB and enclosure design, sensor positioning, fault detection, and calibration procedures.
Additional sections describe manufacturing processes, pre‑heating, final assembly, gas calibration, and proper storage conditions to ensure long‑term stability and safety of the detectors. This manual is written in Chinese.
| Recommended resistor values (basic circuit) | R1 = 1.2 kΩ, R2 = 1.2 kΩ, VR = 100 Ω |
|---|---|
| Fault detection voltage threshold | Vout ≤ 0.2 V |
| Alarm delay recommendation | Delay 30 s or longer until Vout ≤ 2 V |
| Pre‑heat time for accuracy‑oriented applications | 2 weeks |
Use R1 = 1.2 kΩ, R2 = 1.2 kΩ and VR = 100 Ω as recommended.
A fault is indicated when the output voltage drops to 0.2 V or lower (Vout ≤ 0.2 V).
The manual recommends a pre‑heating period of two weeks.
Store the detector at room temperature in clean air, avoiding dust, organic vapors and strong cleaning agents.