Description
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.
- ✓ Equipped with a standard light and sound alarm interface that can be expanded on-site, ensuring effective early warning for gas leakage incidents.
- ✓ Dual-wire outlet design reduces wiring complexity and speeds up on-site installation.
- ✓ Digital sensor assembly can be replaced without field calibration, lowering long-term maintenance costs.
- ✓ IP66 protection rating — withstands harsh environmental conditions including dust, humidity and water splashing.
- ✓ Supports XBUS 2/4-wire communication with two-channel relay output plus one-channel audible and visual signal output, enabling direct interlock with external safety equipment.
- ✓ Widely used in natural gas and LNG monitoring scenarios, providing reliable linkage control for industrial safety systems.
Detector Specification
| Parameter | 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 | < 15 sec / 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: 2×M26×1.5P | 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) × 152.6(H) × 71(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°C | 36 months | <15 sec / 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. |
Frequently Asked Questions (FAQ)
Q
What hazardous area classifications does the GTYQ-AT0505 support?
The GTYQ-AT0505 is certified for use in Zone 1 and Zone 2 hazardous areas, with an explosion-proof rating of Ex db IIC T6 Gb. It meets both explosion-proof and dust ignition-proof performance requirements, making it suitable for a wide range of industrial safety applications.
Q
What types of combustible gases can this detector monitor?
The detector uses a catalytic-type sensor with broad-spectrum capability. It can detect most flammable gases and vapors, including methane (CH₄), propane (C₃H₈), isobutane, hydrogen (H₂), ethanol vapors, and more, covering a measuring range of 0–100% LEL.
Q
Does the sensor require on-site calibration when replaced?
No. The GTYQ-AT0505 features a digital sensor assembly that can be replaced in the field without requiring on-site calibration. This significantly reduces maintenance downtime and lowers long-term operational costs.
Q
What communication and output interfaces does the GTYQ-AT0505 provide?
The detector supports XBUS 2/4-wire communication and provides two-channel relay output (24V/1A) plus one-channel audible and visual signal output (50mA). These interfaces allow direct interlock with external safety systems and alarms, and the light/sound alarm interface can be further expanded on-site.
Q
What are the environmental protection and installation capabilities of this detector?
The GTYQ-AT0505 carries an IP66 protection rating, providing robust resistance to dust, humidity, and water splashing. It operates across a wide temperature range of -40°C to +70°C and humidity up to 95% RH. It supports wall, pole, and ceiling mounting options and features a dual-wire outlet for simplified wiring and fast installation.
Q
What is the typical lifespan of the catalytic sensor, and how stable is its performance?
The catalytic sensor has a typical lifespan of 36 months. It delivers a linear output signal with minimal performance fluctuation over long-term use, offering both high sensitivity and fast response (<15 sec to 90% scale). The sensor also exhibits resistance to common poisoning substances such as silicon and lead compounds, further extending its service life.