
VESDA-E VES-A00-P Product Guide
www.xtralis.com
5
2
Product Information
2.1
Detector Components
The VES-A00-P detector contains field-replaceable Filter, Aspirator and Chamber Assembly components.
These are shown below in Figure 2-1.
B
C
D
E
F
G
Legend
A
Fascia
B
Filter
C
Chamber Assembly
D
Aspirator
E
Sampling Module
F
Base
G
Ultrasonics Flow
Sensing and Scanning
Module
Figure 2-1: Detector components
Refer to Chapter 7 for further information regarding maintenance scheduling and availability of spare parts.
2.2
How the VES-A00-P works
An air sampling pipe network collects samples from the protected area. The integrated aspirator draws air into
the sampling pipe(s).
The air from each sampling pipe passes through a valve and an air flow sensor and a sample of the air is then
drawn into the smoke detection chamber via the sampling module, after first passing through the replaceable
filter.
A further filter provides filtered clean air to protect the optical surfaces inside the detection chamber from
contamination.
The detection chamber uses a short wavelength laser light source in conjunction with photodiodes and
advanced imaging technology to achieve optimum response to a wide range of smoke types.
The VES-A00-P draws air from all sectors in use. If the smoke level reaches the Adaptive Scan Threshold,
the VES-A00-P quickly scans each sector to identify which sector is carrying smoke. The Adaptive Scan
Threshold starts at one quarter of the lowest Alert threshold and self-adjusts to minimize unnecessary scans if
they occur.
Once this fast initial scan is completed the VES-A00-P continues to monitor all four sectors. The sector with
the highest smoke during the initial scan is preferentially scanned so as to provide the fastest response.
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