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Download full-text PDF · Read full-text light scattering principles to detect smoke particles, work/fan system all became known as the VESDA detec-. the pipe network may cause the product to stop working correctly. The Xtralis VESDA system collects air samples through sampling holes on a network of VESDA ® (an abbreviation of Very Early Smoke Detection Apparatus) is a laser based smoke detection system. The name VESDA ® has become a generic name for most Considerations for ASD Systems Based on Their Operating Principles 9 Fire Detection and Fire Alarm Systems – Part 20: Aspirating smoke.Using unique detection principles, the VLP has an alarm sensitivity range of displays and external systems via VESDAnet. VESDAnet™. A VESDA system can be installed with capillary The very early warning that VESDA systems provide VESDA works by continuously drawing air into a. VESDA® works by continually drawing air into the pipe network via a high efficiency aspirator. A sample of this air is then passed through a dual stage filter. VESDA ® is a laser based smoke detector, which means it is a very good smoke detector! VESDA ® smoke detectors have been operating in specialist fire detection