The TunnelTech 101 Visibility Monitor (VIS), is an essential part of any road or rail tunnel safety system. Firstly, it monitors the Visibilty within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air for drivers to clearly see the road ahead.
Secondly, used in combination with other TunnelTech 101 VIS monitors, the operator can quickly detect the focus of the fire if it is also equipped with the optional PT100 temperature sensor to accurately measure ambient air temperature in a range of -15 to 1050C.

Key Features

  • Continuous measurement of Visibility in road and rail tunnels
  • Optional, integral ambient temperature measurement for locating fires
  • No moving components providing maintenance free operation
  • Accurate optical attenuation technology
  • Optional Modbus RTU serial outputs

101_series

 

Feature

Specification

Gas Species Options Visibility
Measuring units K factor(M-1) or metres
Measurement Range 0 – 0.015m-1
Ambient Temperature -20°C to +50°C
Power supply 24V DC
Construction Aluminium enclosures
Analogue outputs 1 x 4-20mA isolated current output, 500Ω maximum load, fully configurable
through TunnelMaster software.
Relay Outputs 1 x volt-free SPCO contacts, 50V, 1A maximum load, configurable as alarm contacts
Serial Data RS485 – Modbus RTU

To view the TunnelTech 101 full specification please click here to download the product datasheet.

Lang Filetype Document Size
English Adobe_Acrobat_Pro_PDF TunnelTech 101 Datasheet 400kb

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