Description
The GTQ-XP4000 stands out as an infrared-based explosion proof combustible gas detector with strong anti-poisoning capability, targeting long-term stable detection in complex industrial atmospheres. It features a full explosion and dust ignition proof design, ensuring safe operation in explosive hazardous areas. Adopting an infrared detection principle, it shows excellent resistance to silicon, sulfur and halogen compounds, greatly extending sensor service life and reducing maintenance frequency. It is equipped with dual-channel relay output, supporting independent high and low alarm threshold control for precise risk grading. The digital sensor assembly can be replaced without field calibration, and the IP66 protection level ensures reliable performance in harsh environments. It integrates a two-stage built-in sound-light alarm and a high-brightness digital tube display for clear alerts. A standard expansion port supports 4-20mA, HART, RS485 and relay output, enabling flexible access to various monitoring platforms. It is a high-end choice for refractory flammable gas monitoring in petrochemical and chemical industries.
Detector Specification
| Model |
GTQ-XP4000 |
| Measuring gas |
Combustible gases (Methane, propane, isobutane, hydrogen, etc.) |
| Measuring type |
Diffusion type |
| Measuring method |
Infrared |
| Measuring Range |
0-100% LEL |
| Response time |
< 30sec / 90% scale |
| Accuracy |
±3% / Full Scale |
| Operation mode display |
Normal / High Alarm / Low Alarm / Trouble LED |
| Measuring value display |
Digital tube |
| Power |
24V DC nominal, 18 to 31V DC |
| Alarm signal output |
Light and sound output / 50mA |
| Output signal |
XBUS 2/4 wire
Optional expansion module:
4-20mA / R485 /HART / NB-IoT / 4G / One-channel passive relay output / HBUS |
| Conduit connection |
Standard: 3xM26x1.5P
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 |
157.5(W) x 178.4(H) x 90(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. |
