General
ASD 532, Maintenance, T 140 425 en 9 / 21
1 General
1.1 Purpose
The ASD 532 aspirating smoke detector has the task of continuously taking air samples via a sampling pipe tube network from
a monitored area and feeding the samples to a smoke sensor. Thanks to this detection method and the product’s excellent
properties under severe ambient conditions, the ASD 532 aspirating smoke detector is used wherever problems are to be ex-
pected owing to poorly accessible monitored areas or latent disturbance variables during operation such that optimal protec-
tion can no longer be guaranteed with conventional point detectors.
The SSD 532 smoke sensor is used in the ASD 532. It is available in the three following versions and sensitivity ranges:
•SSD 532-1 Alarm sensitivity range 0.5%/m to 10%/m
•SSD 532-2 Alarm sensitivity range 0.1 %/m to 10%/m
•SSD 532-3 Alarm sensitivity range 0.02%/m to 10%/m.
The ASD 532 aspirating smoke detector has two slots for additional modules. The following modules can be fitted:
•XLM 35 eXtended Line Module
•RIM 36 Relay Interface Module with 5 relays;
•SIM 35 Serial Interface Module.
1.2 Abbreviations, symbols and terms
The following abbreviations, symbols and terms are used in the Technical Description T 140 425. The abbreviations for tube
material and accessories are listed in a separate document: T 131 194.
