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. |
