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ASD-535 Aspirating Smoke Detector (VESDA)

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ASD-535 Aspirating Smoke Detector (VESDA)

The SecuriRAS ASD 535 aspirating smoke detector is the new generation of a highly sensitive, active smoke detection system. It offers application-specific sensitivity adjustment alongside pre-signalling and pollution analyses. The SecuriRAS ASD 535 detects even minuscule glowing and smouldering fires and can be deployed practically anywhere. Design and function The SecuriRAS ASD 535 consists of one or two independent sampling lines with sampling apertures, each with a highly sensitive smoke sensor. Air flow monitoring ensures that the sampling lines are constantly checked for pipe breakage and the sampling holes monitored for pollution. A high-performance ventilator sucks the air from the room or facility being monitored through the sampling line to the evaluating processor unit. There the air is continuously evaluated by the smoke sensors. The display and control panel of the evaluating processor unit indicate the smoke concentration of the sampled air and other alarm, fault and status messages. Any increase in the smoke concentration is detected very early. Three pre-signals and two main alarms can be programmed for each and signalled via potential-free relays or directly to the SecuriLine ring circuit. There are four expansion slots for accommodating modular relay interfaces and memory card prints.
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Applications
The SecuriRAS ASD 535 is ideal for property and
space surveillance thanks to its excellent response
behaviour. Typical applications include:
• Space surveillance:
• High-rack warehouses and distribution centers
• Archive rooms
• Intermediate ceilings and raised floors
• Large halls
• Museums, galleries, theatres, cinemas
• Cultural artefact collections, historical buildings
• Airports
• Informatics and computer centers
• Telecommunication centers
• Laboratory and research centers
• Electronic measuring rooms
• Transformer rooms
• Clean rooms
• Refrigerated warehouse
• Invisible applications:
• Protection of cultural assets
• Prison cells
• Property surveillance:
• Telecommunication facilities
• High and low voltage distribution cabinets
• Display cases
• IT installations
• CNC control systems
Bi-directional integration
The SecuriRAS ASD 535 can be readily integrated
in the SecuriPro and SecuriFire fire alarm systems
with the optional SecuriLine SLM35 interface.
The display and operation of, e.g. the day/night
sensitivity controls are easy using the fire detection
control unit.
Highly sensitive smoke sensor
The SSD 535 smoke sensor was specially developed for the SecuriRAS ASD 535 and is the result
of extensive research. Use of a high power LED
combined with a large volume smoke chamber
(LVSC) results in unparalleled, adjustable sensitivity with low aerodynamic resistance and supreme
resistance to pollution and soiling. This ensures a
long service life.
Easy to plan and commission
For straightforward, standard installations the
SecuriRAS ASD 535 with EasyConfig offers fast,
foolproof, computer-free commissioning. More
complex installations are calculated using the ASD
PipeFlow calculation software and configured with
ASD Config, the commissioning and maintenance
software. This allows for better-value asymmetrical pipe layouts. The optional MCM 35 memory
module facilitates the comprehensive long-term
logging of smoke levels directly to the SD memory
card for analysis on the computer.
Range of accessories
An extensive range of accessories with VdS
approval is available (25 mm and ¾” sampling
tube, sampling points, filters, water separators,
explosion protection, etc.).

The latest generation of universal aspirating
smoke detectors
• 1 or 2 sampling lines with separate air flow
monitoring
• EN 54-20, Class A, B, and C
• VdS certified calculation software: ASD PipeFlow enables efficient, asymmetrical pipe
layout
• Resolution <0.001%/m
• Insensitive to pollutants thanks to particle
suppression (patent pending)
• Auto-learning function
• High performance suction (> 400 Pa vacuum)
• Low noise level, compliant with ISO 11690-1
• 5 alarm levels (3 pre-alarms and 2 alarms)
• Refined smoke detection thanks to high
dynamic (HD) sensors

Manual Manual
  • Permitted voltage range: 10.5–30 VDC
  • Operating current, quiescent (typical): 290 mA typical (at 24 VDC)
  • Alarm sensitivity: 0.02%/m–10%/m (0.00087–0.457 dB/m)
  • Presignals 1, 2 and 3: 0.002–9%/m, programmable in 10% increments
  • Interfaces: 3 relays/open collector (alarm, fault, programmable), service interface: USB
  • Number of expansion slots: 4 (SLM 35, MCM 35, SIM 35 and 2×RIM 35)
  • Relay contact load: 30 VDC / 1 A
  • Standards: EN 54-20, Class A, B and C
  • Approvals: VdS G208154, 0786-CPD-20600, FM, CNAL
  • Ambient operating temperature: –30 °C to +60 °C
  • ICE 529 protection class: IP 54 (achieved without limitations)
  • Housing dimensions: 263×397×146 mm (W×H, with entries×D)
  • Housing colour: Light grey RAL 280 70 05, Charcoal RAL 300 20 05
  • Housing material: ABS blend, UL 94-V0
  • Weight Approx.: 3850 g
  • Display and control: Standard 1 LED (green): POWER, 1 or 2 LEDs (yellow): Fault, 1 or 2 LEDs (yellow): Alarm/Pollution, 1 reset button, Deluxe design Supplementary: 10 or 20 LEDs (yellow) for smoke level display
  • Event data memory/analogue value logging: Standard: max. 430 events, with MCM 35: analogue value logging up to 1 year
  • Cable entries: 4×M20, 1×M25
  • Ventilator: Radial, 5 speeds
  • Ventilator service life: 65,000 hours (at 40 °C)
  • Suction pressure: > 400 Pa (performance level 5)
  • Suction noise: *43 dBA (ventilator level 3, standard), 32 dBA (ventilator level 1), *Complies with ISO 11690-1: Acoustics – Recommended practice for the design of low-noise workplaces containing machinery
  • System criteria tested to EN 54-20*: Max. 2×240 m (Easy Config), max. 2×300 m (ASD PipeFlow), max. 2×120 sampling apertures
  • System criteria without standard conformity: Max. 2×400 m (ASD PipeFlow), max. 2×120 sampling apertures (ASD PipeFlow)

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