Description
As an upgraded version of the AT0503 series, the GTYQ-AT0503/d integrates real-time display functionality while retaining all core explosion-proof and detection performance. It adopts a full explosion and dust ignition proof structure, ensuring safe operation in locations with potential combustible gas leakage risks. The standard light and sound alarm interface supports on-site expansion, and the dual-wire wiring method simplifies installation for both new projects and retrofits. The digital sensor assembly supports hot-swappable replacement without on-site calibration, ensuring continuous system operation. It supports both XBUS and 4-20mA analog communication, and is compatible with third-party 3/4-wire 4-20mA detectors for flexible system integration. The biggest highlight is its built-in LCD display, which presents real-time gas concentration values intuitively, helping operators monitor site status at a glance. With IP66 protection, it operates reliably in harsh environments. This model is suitable for industrial sites that require both remote transmission and on-site direct reading of gas data.Detector Specification
| Model | GTYQ-AT0503/d |
| 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 |
| Measuring value display | LCD / Rate flow |
| Power | 24V DC nominal, 18 to 31V DC |
| Alarm signal output | Light and sound output / 50mA |
| Output signal | XBUS 2/4 wire / Analog: 4-20mA |
| 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 151.5(H) x 74(D) mm |
| Explosion Proof | Ex db IIC T6 Gb |
| Certification | Refer to website |
Sensor Specification
| Sensor Type | Measuring Gas | Measuring Range | Operating Temperature | Typical Life | Response Time |
| Catalytic Type | Combustible gases | 0~100%LEL | -40+70℃ | 36 month | <15sec / 90% scale |
Sensor Features
| Catalytic Type | Linear Output: Output signal shows a good linear relationship with gas concentration, enabling precise concentration readings. | |||||||
| High Stability: Minimal performance fluctuations during long-term use, ensuring reliable detection results. | ||||||||
| High Sensitivity & Fast Response: Quickly captures gas concentration changes and triggers timely alerts. | ||||||||
| Broad-Spectrum Capability: Detects most flammable gases and flammable vapors (e.g., hydrogen (H₂), methane (CH₄), propane (C₃H₈), ethanol vapors, etc.). | ||||||||
| Poisoning Resistance & Low Consumption: Exhibits certain tolerance to common poisoning substances (e.g., silicon, lead compounds), with a long service life and low attrition rate. | ||||||||
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