For ventilation control in road tunnels

  • At a glance
    • Automatic adjustment function (AutoAdjust)
    • Contamination check
    • Menu-driven operation via evaluation unit
    Your Benefits
    • Direct measurement, nearly without time lag
    • Low operating and maintenance costs (especially for VICOTEC411)
    • Flexible system integration with analog outputs or PROFIBUS
    For ventilation control in road tunnels

    The VICOTEC410 product family of compact analyzers detect measurands for visibility or carbon monoxide concentrations in road tunnels:

    • VICOTEC411 for determination of visibility
    • VICOTEC412 for measurement of CO concentration
    • VICOTEC414 for the simultaneous measurement of visibility and CO concentration.

    These measurement devices request maintenance only when sensors are contaminated – reducing maintenance costs to a minimum. The VICOTEC411 monitors visibility in a tunnel and thus provides information on visibility conditions. A continuous, practically real-time control signal is used for serves for efficient ventilation control. The VICOTEC412 monitors CO pollution directly within the tunnel atmosphere. The VICOTEC414 offers a combined measurement device for simultaneous monitoring of visibility and CO concentration.

  • Please note: The exact device specifications and performance data of the product may deviate from the information provided here, and depend on the application in which the product is being used and the relevant customer specifications.

    • VICOTEC410 system
      Measured valuesVisibility (K-value), CO
      Measurement principlesTransmittance measurement, Gas filter correlation
      Length of measuring path
      10 m
      Measuring ranges
      Visibility (K-value)0 ... 15 km⁻¹
      CO0 ... 300 ppm
      Visibility (K-value)± 0.1 km⁻¹
      CO± 2 ppm
      Ambient temperature
      –30 °C ... +60 °C
      Storage temperature
      –30 °C ... +85 °C
      Electrical safetyCE
      Enclosure rating
      Analog outputs2 outputs:
      0/2/4 ... 20 mA
      Digital outputs3 relay contacts:
      125 V AC, 60 W / 150 V DC, 30 W
      Preset for failure, maintenance and alert
      Digital inputs1 input:
      5 V, 2 mA
      For external maintenance switch
      Type of fieldbus integrationRS-422
      OperationMenu-driven operation via evaluation unit

      VICOTEC411 (only visibility)

      VICOTEC412 (only CO)

      VICOTEC414 (visibility and CO)

      Dimensions (W x H x D)


      RCU410 evaluation unit

      Connection unit

      Connection unit with separate power supply

      190 mm x 259 mm x 539 mm

      254 mm x 349 mm x 122 mm

      125 mm x 103 mm x 57 mm

      163 mm x 111 mm x 57 mm

      For details see dimensional drawings
      Power supply
      Voltage190 ... 260 V AC / 95 ... 130 V AC
      Frequency50 Hz / 60 Hz
      Power consumption

      VICOTEC411: ≤ 45 W

      VICOTEC412: ≤ 80 W

      VICOTEC414: ≤ 90 W

      Corrective functionsZero point adjustment
      Test functionsReference point check

    Technical drawings

    VICOTEC410 connection unit with separate power supply
    VICOTEC410 connection unit
    RCU410 control unit
    VICOTEC410 sender/receiver unit

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