Guangzhou GZAIR Instruments Co., Ltd.
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Explosion-Proof 4-Gas Detector for Workplace Gas Hazard Protection
Ensure maximum safety in high-risk environments with the Explosion-Proof 4-Gas Detector, a rugged and reliable solution for continuous monitoring of Combustible Gases (LEL), Oxygen (O₂), Hydrogen Sulfide (H₂S), and Carbon Monoxide (CO). Designed to withstand the toughest industrial conditions, this detector is ideal for confined spaces, hazardous zones, and workplace safety compliance across sectors like oil & gas, mining, manufacturing, and chemical processing.
Equipped with high-precision sensors and housed in a durable explosion-proof casing, this 4-gas monitor offers real-time data, audible/visual/vibration alarms, and long-lasting performance—even in extreme environments.
Key Features:
Simultaneous 4-Gas Monitoring: Detects and displays real-time levels of LEL (combustible gases), O₂, H₂S, and CO, providing early warning of dangerous gas leaks or oxygen deficiency.
Explosion-Proof & Intrinsically Safe Design: Ex ib IIB T3 Gb marked, ensuring safe operation in flammable or explosive atmospheres.
Audible, Visual & Vibration Alarms: Immediate alerts when gas levels exceed preset thresholds—ideal for noisy, low-visibility, or confined space conditions.
High-Precision Sensors: Fast response times and accurate readings with electrochemical and catalytic sensors for reliable hazard detection.
Large LCD Display: Easy-to-read backlit screen shows all gas concentrations, battery level, and alarm status at a glance—even in dark environments.
Rechargeable Battery: Long-lasting 2000mhA lithium-ion battery supports extended field use with quick charging capabilities.
Data Logging & Calibration: Optional data logging function and easy sensor calibration help maintain compliance with safety regulations.
| Product Name | 4 gas detector |
| Model | X-4 |
| EX Detection range/Resolution | (0~100)%LEL, 1%LEL |
| H2S Detection range/Resolution | (0~100)PPM, 1PPM |
| CO Detection range/Resolution | (0~1000)PPM, 1PPM |
| O2 Detection range/Resolution | (0~30)%VOL, 0.1%VOL |
| EX Low alarm/High alarm | 20%LEL, 50%LE |
| H2S Low alarm/High alarm | 10PPM, 20PPM |
| CO Low alarm/High alarm | 50PPM, 200PPM |
| O2 Low alarm/High alarm | 19.5%VOL, 23.5%VOL |
| Error | ±5% FS (combustible),±10% FS (carbon monoxide),±10% FS (hydrogen sulfide) |
| Response time | T<30s |
| Indicate method | LCD indicates the real time data and system status, Light-emitting diode, sound, vibrate indication alarm, failure, and lack of voltage Working |
| Working Temperature | -4F-122F |
| Working Humidity | < 95 %RH (non-condensing) |
| Power Source | DC 3.7 V Li-lon Rechargeable battery, 2000 mAh |
| Explosion proof mark | Ex ib IIB T3 Gb |
| Charging time | 3~5 hrs |
| Standby time | 15~18 hrs under a standard situation |
| Life of Sensors | EX, H2S, C0---3 years; 02---5 years |
| Dimension | 5.2*1.9*2.2 inch |
| Weight | 17.6 ounce |
