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The GTYQ-AT0505 is a high-stability explosion proof combustible gas detector with rich output interfaces, designed for complex industrial safety monitoring systems. It features complete explosion and dust ignition proof performance, meeting the safety requirements of Zone 1 and Zone 2 hazardous areas. It is equipped with a standard light and sound alarm interface that can be expanded on-site, ensuring effective early warning for gas leakage incidents. The dual-wire outlet design reduces wiring complexity and speeds up on-site installation. Its digital sensor assembly can be replaced without field calibration, lowering long-term maintenance costs. With an IP66 protection rating, it withstands harsh environmental conditions including dust, humidity and water splashing. This model supports XBUS 2/4-wire communication and provides two-channel relay output plus one-channel audible and visual signal output, enabling direct interlock with external safety equipment. It is widely used in natural gas and LNG monitoring scenarios, providing reliable linkage control for industrial safety systems.
Output signal shows a good linear relationship with gas concentration, enabling precise concentration readings.
Minimal performance fluctuations during long-term use, ensuring reliable detection results.
Quickly captures gas concentration changes and triggers timely alerts.
Detects most flammable gases and flammable vapors (e.g., hydrogen (H₂), methane (CH₄), propane (C₃H₈), ethanol vapors, etc.).
Exhibits tolerance to common poisoning substances (e.g., silicon, lead compounds) with a long service life.
| Parameter | Specification Details |
| Model | GTYQ-AT0505 |
| Measuring gas | Combustible gases (Methane, propane, isobutane, hydrogen, etc.) |
| Measuring type | Diffusion type |
| Measuring method | Catalytic |
| Measuring Range | 0-100% LEL |
| Response time | < 15sec / 90% scale |
| Accuracy | ±3% / Full Scale |
| Operation mode display | Normal / Alarm / Trouble LED |
| Power | 24V DC nominal, 18 to 31V DC |
| Alarm signal output | Light and sound output / 50mA |
| Output signal | XBUS 2/4 wire |
| Relay output | Two-channel 24V/1A |
| Conduit connection | Standard: 2xM26x1.5P Option: FPT3/4', NPT3/4'' |
| Mounting type | Wall/Pole/Ceiling mount |
| Operating temperature | -40°C ~ +70°C |
| Operating humidity | 5 to 95% RH (Non-condensing) |
| Housing Material | Aluminum alloy |
| Dimensions | 150(W) x 152.6(H) x 71(D) mm |
| Explosion Proof | Ex db IIC T6 Gb |
| Sensor Type | Measuring Gas | Measuring Range | Operating Temperature | Typical Life | Response Time |
| Catalytic Type | Combustible gases | 0~100% LEL | -40°C ~ +70°C | 36 months | <15sec / 90% scale |
