1. Product Overview
The INK466 Tunnel Gas Monitoring and Warning System is a full-spectrum environmental safety solution designed to meet tunnel safety regulations and highway construction standards. It monitors, prevents, and controls toxic/hazardous gases, dust, noise, and meteorological conditions in real time. The system collects on-site data via sensors, processes it, and transmits it to a backend monitoring center, displaying environmental indices and triggering audible/visual alarms when thresholds are exceeded. Integrated video surveillance enhances safety by preventing unauthorized entry, making it ideal for road, railway, and industrial tunnel applications requiring continuous, multi-parameter monitoring.
2. Sensing Technology & Self-Cleaning System
The INK466 system employs multiple complementary sensing technologies tailored for tunnel environments:
- Gas Detection: Uses three core principles – catalytic combustion (for combustible gases like methane), electrochemical (for toxic gases like CO, H₂S, O₂), and infrared (for CO₂) – ensuring high accuracy, selectivity, and stability across different gas types.
- Dust & Environmental Sensing: PM2.5/PM10 dust sensors, noise meters, and meteorological sensors (temperature, humidity, wind speed/direction) provide comprehensive environmental data.
- System Architecture & Maintenance: While individual sensors may require periodic calibration, the system’s centralized design simplifies maintenance through remote monitoring and diagnostics. Its expandable architecture allows sensor replacement without disrupting the entire system. The IP65-rated enclosure protects against dust and moisture, reducing environmental interference with sensor performance.
3. Key Features & Competitive Advantages
- Highly Expandable, Customizable Monitoring: Freely configurable and combinable monitoring factors allow users to tailor the system to specific tunnel safety requirements, supporting future upgrades and changing regulations.
- Centralized Real-Time Monitoring: A unified monitoring center provides a complete overview of all tunnels and control equipment, enabling proactive safety management and rapid response to environmental hazards.
- Optional Solar Power Supply: Supports uninterrupted operation in remote or off-grid tunnel locations, eliminating reliance on external power infrastructure.
- Multi-Protocol Communication Support: Compatible with RS232, RS485, RJ45, GPRS, and WiFi, ensuring seamless integration with existing tunnel SCADA systems, backend platforms, and remote monitoring networks.
- Multiple Data Viewing Options: User-friendly interfaces simplify operation and maintenance, with easy access to real-time data, historical logs, and alarm records.
- Configurable Audible/Visual Alarms: Freely adjustable upper/lower alarm thresholds, paired with audible and visual alerts, ensure timely notification of hazardous conditions to on-site and remote personnel.
- Video Surveillance Integration: Supplementary video monitoring prevents unauthorized entry and enhances situational awareness, combining environmental safety with physical security.
- Expandable Alarm & Output Functions: Supports network-linked alarms and passive contact outputs for triggering ventilation systems, safety barriers, or other control equipment.
4. Technical Specifications
| Parameter |
Specification |
| Operating Voltage |
AC 220 V or DC 12 V |
| Response Time |
≤20 seconds |
| Detection Accuracy |
±3 % (F.S.); linearity ±2.0 % |
| Recovery Time |
≤30 seconds |
| Detection Principle |
Catalytic combustion / Electrochemical / Infrared |
| Protection Class |
IP65 |
| Monitored Gases |
Methane, CO, H₂S, O₂, CO₂, etc. |
| Monitored Parameters |
Temperature & humidity, wind direction & speed, noise, PM2.5, PM10, etc. |
| Communication |
RJ45 network / RS485 wired / GPRS wireless |
| Alarm Method |
Audible and visual alarm; freely configurable upper/lower thresholds |
| Operating Temperature & Humidity |
-30 °C ~ +80 °C; 10 ~ 95 %RH |
| Expandable Function |
Network-linked alarm; passive contact output |
5. Applications
- Road tunnel environmental safety monitoring and gas hazard prevention
- Railway tunnel toxic gas and dust monitoring for passenger and worker safety
- Urban highway and underpass air quality and noise compliance monitoring
- Industrial and mining tunnel gas detection for explosion and poisoning prevention
- Smart city tunnel management systems with integrated safety and surveillance
- Remote or off-grid tunnel monitoring with optional solar power supply
- Construction tunnel safety monitoring during excavation and operation phases
- Compliance monitoring for highway construction and tunnel safety regulations
