de Glossar

When there is fire and smoke in the Milchbucktunnel!

When there is fire and smoke in the Milchbucktunnel!

Experts of the Swiss Federal Office for Roads regularly test the fire control systems of Swiss tunnels.

During the night of 30th April, 2015, these experts tested in the Milchbucktunnel in Zurich whether all fire control systems were functioning without fault. As you can read in the newspaper report of the Tagesanzeiger, all fire detection devices functioned to the experts’ satisfaction.

In the Milchbucktunnel, the following SIGRIST measuring instruments have been installed:

- VisGuard In-situ for visibility measurement

- FireGuard as smoke detectors

All measuring instruments operated perfectly in this test. In case of a real fire, people and material are actively protected by the reliability of our SIGRIST instruments.

Please read more in the attached English translation of the newspaper article. (The video is only in available in Swiss German)

FireGuard
The FireGuard measures the scattered light intensity in tunnels with scattering angle, measuring range, response threshold and signal processing being optimized for smoke and fire detection. Air sample is fed through the measuring cell without the use of
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VisGuard In-situ
The VisGuard measures the scattered light intensity of a sample drawn into the instrument. Filtered purge air is fed through the flow cell, thus enveloping the sample in a protective shroud of clean air. This effectively keeps the optics clean. Installati
More Info
VisGuard In-situ
The VisGuard measures the scattered light intensity of a sample drawn into the instrument. Filtered purge air is fed through the flow cell, thus enveloping the sample in a protective shroud of clean air. This effectively keeps the optics clean. Installati
More Info

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René Gehri
Water, Beverages & Food, Industrial Processes
Pascal Schärer
Traffic & Environment

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