Xtralis VESDA VLC-500-EX Product Manual

Also see for VESDA VLC-500: Installation guide Installation guide

Xtralis VESDA VLC-500-EX Product Manual Manual pdf 11 page image

VESDA by Xtralis VESDA VLC-EX Product Guidewww.xtralis.com 32 OperationAn air sampling pipe network collects air samples from a protected area. The integrated aspirator draws airinto the sampling pipes through a pipe inlet manifold. For further information on air sampling pipe networksplease see the Pipe Network Design and Installation Manuals.Some of this air flows to the dual stage filter. The first stage air filter removes dust and dirt from the sampledair after which the sample flows to the laser detector chamber which is designed to detect the presence ofsmoke.Any smoke detected in the laser detection chamber is signaled to the main processor card. If the presence ofdetected smoke is higher than the set thresholds it is reported as a Pre-Alarm or an Alarm depending upon thealarm thresholds. The second stage filter further filters the air to produce ultra clean air. The ultra clean air isused to clean the optical surfaces in the laser detection chamber.Figure 2-1: Operation and internal air flow of the VESDA VLC-EX Detector