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VESDA Marine Aspirating Smoke Detector

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Key Features

  • IP30 rating (can be housed in an IP66 enclosure for increased protection)
  • Det Norske (DNV) Approval
  • Single pipe inlet
  • VESDAnet communication (VN)
  • Clean air barrier optics protection

Overview

VESDA VLC Marine aspirating smoke detectors provide all the benefits of aspirating smoke detection, including very early warning of fire, for marine environments. These detectors have been through additional rigorous testing to ensure optimum performance in even the most challenging of marine applications.

VESDA VLC Marine detectors combine tried and tested VESDA Laser detection technology, dual-stage air filtration technology and a reliable aspirator design (similar to the standard VLC detectors) with a compact, IP30 rated enclosure with a simplified display.

Marine detectors are rated to IP30 and can be housed in an IP66 enclosure, available from Eurofyre, should higher protection be required. All VESDA Marine products are approved by Det Norske (DNV) and can be installed in the following location classes:

Like the standard VESDA VLC detectors, Marine Detectors are available in two different versions: one that interfaces via relays only (RO) and one that interfaces via relays and VESDAnet (VN).

The VN version allows multiple detectors on VESDAnet and allows one detector to act as a reference detector for the others. The VN version is compatible with the Marine version of the remote display module, allowing the status of the detector to be reported at the most convenient location. The Marine remote display module has seven remote relays available to support any combination signalling that is required by the application.

How it Works

VESDA VLC detectors are constructed of two parts: the main enclosure and the front cover. All the key components of the detector are housed in the main enclosure, while non-serviceable items such as the main processor board and detector chamber are mounted away from the general access area, protecting them during servicing and installation.

The front cover has five LEDs indicating fire, pre-alarm/alert, fault, OK and reset/isolate conditions and a reset/isolate push button.

A high-efficiency aspirating fan continually draws air from the protected areas via sampling holes in a network of aspirating pipe. The drawn air passes a flow sensor and a sample is directed through a dual-stage dust filter. The first stage of the dust filter removes dust and dirt from the air before it enters the smoke detection chamber, and the second ultrafine stage provides a clean air supply to form clean air barriers to protect the optical surfaces from contamination.

A stable, high-efficiency laser light source and unique sensor configuration are used in the detection chamber to achieve the best possible response to a variety of smoke types. Light scatter is created by smoke entering the chamber which is detected by the very sensitive sensor circuitry.

All alarms, service, fault events and the status of the detector are monitored and logged with accurate time and date stamps. Status reporting is transmitted via relay connections or via the advanced VESDAnet communications network (VN version only).

Other Features

  • Three Alarm Level
  • Three Programmable Relays
  • Optional remote display and relay capability
  • Simple mounting design
  • Five status LED
  • Absolute smoke detection – Remove
  • Wide sensitivity range – Remove
  • Airflow monitoring
  • AutoLearn™
  • Referencing

Approvals

  • Bureau Veritas
    Approved for use in Bridge and Deck zones as defined in the BV Rules for the Classification of Steel Ships.
  • Lloyd’s Register
    Applications defined as Marine, offshore and industrial use in environmental categories ENV1, ENV2 and ENV3 as described in Lloyd’s Register Test Specification No. 1:2002. The specified standard to which the type approval relates is CEA 4022:1999.
  • FM Hazardous Locations: Suitable for Class 1, Division 2, Groups A, B, C and D

Tech Specs

Supply Voltage18 to 30Vdc
Power Consumption5.4W quiescent, 5.9W with alarm
Current Consumption225mA quiescent, 245mA with alarm
Fuse Rating1.6A
Dimensions (W x H x D)225mm x 225mm x 85mm (8 7/8” x 8 7/8”x 3 3/8”)
Weight1.9kg (4.2 lbs)
Operating ConditionsTested to -25°C to 70°C (-13°F to 158°F)
Ambient 5°C to 70°C (41°F to 158°F) (recommended)
Sampled Air -20°C to 60°C (-4°F to 140°F)
Humidity 10 to 95% RH, non-condensing
Approved for use in bridge and deck zones, and ENV3 environments
Exposure to corrosive atmosphere may invalidate warranty
Storage Conditions (non-operational)Humidity: Dry (<95%)
Temperature: 0° to 85°C (32°F to 185°F)
Must not be exposed to sunlight or other radiation sources
Sampling HolesEN54-20:
Class A (30 holes / 0.05% obs/m)
Class B (36 holes / 0.09% obs/m)
Class C (40 holes / 0.165% obs/m)
Sampling NetworkCode Compliant: 800m² (8000 sq.ft)
Maximum Pipe Lengths1 x 80m (260ft), 2 x 50m (164ft)
Computer Design ToolASPIRE2™
PipeInternal Diameter 15mm–21mm (9/16”–7/8”)
External Diameter 25mm (1”)
Relays3 Relays rated 2A @ 30Vdc
Fire (NO)
Pre-Alarm (NO)
Alert/Fault (Maintenance & Isolate) (NC/NO)
Configurable as latching or non-latching
IP RatingIP30 (optional IP66 enclosure)
Cable Access4 x 25mm (1”) cable entries
Cable TerminationScrew Terminal blocks 0.2–2.5 sq mm (30–12 AWG)
Alarm Sensitivity Range0.005% to 20% obs/m (0.0015% to 6.25% obs/ft)
Threshold Setting RangeAlert: 0.005%–1.990% obs/m (0.0015%–0.6218% obs/ft)
Pre-Alarm: 0.010%–1.995% obs/m (0.0031%–0.6234% obs/ft)
Fire: 0.015%–20.00% obs/m (0.0046%–6.25% obs/ft) Limited to 4% obs/ft for UL
Software FeaturesEvent log: Up to 12,000 events stored in FIFO format
Smoke level, user actions, alarms and faults with time and date stamp
AutoLearn: Minimum 15 minutes, maximum 15 days.
Recommended minimum 14 days.
During AutoLearn thresholds are NOT changed from pre-set values.
Configurable General Input (24Vdc)Standby, Mains OK or Reset/Isolate

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