Fixed 4-in-1 Gas Detector for Tunnel Construction

Ensuring Underground Safety with Fixed 4-in-1 Gas Detectors in Tunnel Construction

Civil engineering projects, particularly deep foundation pits, vertical shafts, and shield tunneling operations like railway construction, present severe safety challenges due to restricted ventilation and the potential accumulation of hazardous gases. To protect workers and maintain regulatory compliance, deploying a reliable fixed 4-in-1 gas detector is critical. Our system provides continuous, real-time monitoring of multiple atmospheric hazards, ensuring a safe working environment in demanding underground locations.

Simultaneous Monitoring of Four Core Gases

In confined and subterranean construction environments, safety protocols require simultaneous detection of explosive risks and toxic components. The Skyeaglee multi-gas system tracks four essential parameters:

• Combustible Gases (EX / LEL): Detects potential leaks of flammable gases such as methane, preventing explosion hazards during excavation.

• Oxygen (O2): Monitors oxygen concentration levels to prevent worker asphyxiation caused by oxygen depletion or consumption in enclosed spaces.

• Carbon Monoxide (CO): Detects toxic carbon monoxide generated by internal combustion machinery, heavy equipment, or hidden fire hazards.

• Hydrogen Sulfide (H2S): Protects workers against toxic hydrogen sulfide gas released from underground sludge, wastewater pipelines, or strata shifts.

Rugged Design and Industrial Integration for Civil Engineering

Designed specifically for harsh industrial and infrastructure environments, this civil engineering gas detection equipment is built to perform where standard monitors fail.

• 316L Stainless Steel Shell: Provides outstanding corrosion resistance and durability against moisture, dust, and physical impact.

• Explosion-Proof Protection: Certified with an IP66 rating and ATEX explosion-proof standards, making it safe for hazardous explosive atmospheres.

• Multi-Signal Output: Features simultaneous 4-20mA current signals, RS485 digital outputs (Modbus RTU), and relay switching to link directly with ventilation fans, PLCs, or central control alarms.

Strategic Installation in Deep Foundation and Tunnel Sites

Proper deployment is essential to guarantee the rapid response speed of the detection system in open or semi-enclosed construction zones.

Placement Proximity: The detector should be installed within one meter of potential gas accumulation zones or leakage points.

Height Considerations: Since heavy gases or oxygen displacement can occur at different strata levels, mounting units securely near breathing zones or lower levels ensures immediate threat detection.

Cable and Power Integrity: Utilizing shielded soft cables for 4-20mA connections ensures data integrity over long transmission distances across large infrastructure sites.