Ultimate Sensor Technology for Tunnel Safety with SICK

Thinking Highways
By Thinking Highways September 28, 2015 13:48

Ultimate Sensor Technology for Tunnel Safety with SICK


Tunnel operators and owners can take advantage of SICK’s unique tunnel monitoring technology to achieve early warning of unsafe visibility and pollution conditions inside road and rail tunnels and ensure the safety of vehicle occupants and tunnel staff.

The SICK VISIC100SF visibility, carbon monoxide and nitric oxide (CO/NO) sensor is a high-reliability tunnel environment monitor and is the only sensor to combine scattered light measurement with electrochemical cell sensing in a single, compact housing.

“Poor environmental conditions in tunnels can make vehicle operation very hazardous for drivers and personnel,” points out Jon Slater, SICK UK traffic management specialist. “Poor visibility leads to higher accident risk. Carbon Monoxide and Nitrous Oxide build-up can cause drowsiness and illness, as well as possible long-term health effects.

“The SICK VISIC100SF enables tunnel operators to anticipate dangerous build-up and implement mitigation measures such as ventilation or restricted entry. It can even operate reliably in foggy conditions.”

VISIC100SF (2)

The SICK VISIC100SF

The SICK VISIC100SF is the only tunnel sensor of its type to combine visibility measurements, with a range of up to 15km,  CO detection of 0 – 300ppm (<3% accuracy) and NO detection of 0 – 100ppm (<3% accuracy). With a response time of 60 seconds or less, the SICK VISIC100SF responds rapidly to changing conditions enabling operators to rely on its data for the appropriate action.

The SICK VISIC100SF is mounted in rugged stainless steel housing with an environmental protection rating of IP69K and so is able to withstand harsh tunnel conditions including tunnel washing procedures, to ensure maximum availability. The operating range is -200C to +550C and an optional heating element ensures resistance to foggy conditions. Set-up is easy with no requirement for alignment, thus facilitating instant operation once installed.

Data outputs include four analogue and three digital channels and communications protocols, via the RS485 connector, include Modbus RTU and PROFIBUS DP options to integrate with the tunnel control system via the tunnel adapter device.

Standards conformed to include ASTRA “Guideline – Ventilation of Road Tunnels” (2008); RABT 2006; RVS 09.02.22; EN 50545; EN 61508 (SIL 1).

Thinking Highways
By Thinking Highways September 28, 2015 13:48