The VICOTEC450 provides an optimal solution for visibility measurement if
| fixtures in the tunnel tube are not permitted or not possible due to lack of space |
| fog should not be included in the visibility measurement. |
The VICOTEC450 draws air from inside the tunnel, heats it above the dew point and determines accurately the visibility by using scattered light technology. Regularly and automatically it carries out a functional test including the function of the laser and receiver as well as the contamination of the optical surfaces. Maintenance requirements for cleaning and filter exchange are automatically registered and signalled in time by the VICOTEC450 due to contamination check and measurement of the air flow rate (optional).
At a glance
| Functional tests with contamination measurement |
| Manual linearity test with ï¬lter set possible |
| Internal purge air for increased intervals between cleaning |
| Maintenance signal (filter and cleaning) |
| Logbook function |
| Extendable with various interfaces or I/O modules (e.g. PROFIBUS, Ethernet, analog module ...) |
Your benefits
| Very reliable operation due to full self-test |
| Cost saving and fast commissioning (compact system, no optical alignment on site required) |
| Flexible electrical integration due to optional interfaces and I/O modules |
Fields of application
| Visibility monitoring in tunnels for ventilation control |
| Smoke detection in tunnels |
| Technical data | |||
| Measurement principles: | Scattered light forward | ||
| Max. number of measurands: | 1 | ||
| Measured values: | Visibility (K-value) | ||
| Measuring ranges: | Visibility: 0 ... 15 /km / 0 ... 5,000 /km | ||
| Gas flow rate: | 30 ... 35 l/h | ||
| Ambient temperature: | -30 ... +55 °C | ||
| Electrical safety: | CE | ||
| Enclosure rating: | IP 66 | ||
| Analog outputs: | 1 output: 0/2/4 ... 20 mA, 750 Ω additional outputs if using I/O modules |
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| Analog inputs: | 2 inputs: 0 ... 20 mA , 0 ... 10 V not electrically isolated; additional inputs if using I/O modules (option) |
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| Digital outputs: | 5 relay contacts: 48 V AC, 1 A potential-free; for status signals; extendible by additional I/O modules |
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| Digital inputs: | 4 potential-free contacts additional inputs if using I/O modules |
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| Interfaces: | RS-232 (service interface) additional interfaces on request RS-485 Interface module (option) USB (service interface) |
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| Bus protocol: | PROFIBUS DP (option) additional buses on request |
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| Operation: | Via LC-display or software SOPAS ET | ||
| System components: | Measuring unit MCU control unit |
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| Test functions: | Automatic self-test Manual linearity check with reference filter Contamination limits: at 30% warning, at 50% failure |
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