The VICOTEC320 measures very small concentrations of NO2 and NO as well as the visibility and temperature in road tunnels simultaneously and fast using proven components without test gases for zero and reference point. An automatic, cyclic adjustment of zero and reference point ensures correct values. The robust enclosure withstands thorough tunnel cleanings without problems. Product requires minimal upkeep: maintenance and cleaning once a year.
The VICOTEC320 can be optionally equipped with an electrochemical cell for CO measurement. This is useful to perform the plausibility checks which some tunnel standards (e.g. German RABT2006) recommend - even when NO2 is measured as lead gas component.
At a glance
| Very low detection limits for NO and NO2 |
| Automatic function monitoring and self-adjustment |
| Very sturdy design in stainless steel |
| Automatic beam alignment between sender/receiver unit and reflector |
Your benefits
| Energy and cost savings for ventilation control due to very low zero offset and accurate measurement |
| Low operational costs because no air aspiration system, no test gases and no ambient air required |
| Low maintenance requirements due to long maintenance interval (1 year) |
Fields of application
| Monitoring of air quality in road tunnels |
| Ventilaton control and filter monitoring in tunnels |
| Technical data | |||
| Measurement principles: | Differential optical absorption spectroscopy (DOAS), Electrochemical cell, Pt1000, Transmittance measurement | ||
| Max. number of measurands: | 5 | ||
| Measuring ranges: | NO: 0 ... 20 ppm / 0 ... 45 ppm CO: 0 ... 100 ppm / 0 ... 300 ppm NO2: 0 ... 1 ppm / 0 ... 5 ppm Visibility: 0 ... 15 /km / 0 ... 99 /km Temperature: -25 ... +55 °C |
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| Length of measuring path: | 10 ... 20 m | ||
| Ambient temperature: | -25 ... +55 °C CO sensor: -20 ... +40 °C |
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| Ambient pressure: | 700 ... 1,200 hPa | ||
| Ambient humidity: | 10 ... 95 % relative humidity; non-condensing |
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| Electrical safety: | CE | ||
| Enclosure rating: | IP 66 MCU control unit: IP 69K |
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| Analog outputs: | 4 outputs: 0 ... 20 mA, 500 Ω 6 outputs if CO is measured |
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| Digital outputs: | 4 relay contacts 6 outputs if CO is measured; three outputs preset for fault, maintenance and functional check |
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| Digital inputs: | 1 input preset for maintenance mode |
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| Interfaces: | RS-232 (service interface) RS-485 Interface module USB (service interface) |
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| Bus protocol: | CAN (option) Ethernet |
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| Operation: | Via LC-display | ||
| System components: | Connection unit Reflector unit Sender/receiver unit |
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| Test functions: | Manual linearity check Contamination check |
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| Corrective functions: | Automatic adjustment | ||