VESDA VLC (LaserCOMPACT) Marine Aspirating Smoke Detector

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


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:

Parameters Locations within the main area Machinery spaces Control rooms, accomodations Bridges Pump rooms, Holds Rooms with no heating Open Decks
Temperature Inside cubicles, desks, etc. With temperature rise of 5°C or more
All other locations

Locations where special precautions are taken to avoid condensation

All other locations
Vibration On machinery such as internal combustion engines, compressors, pumps, including piping on such machinery - -
Masts - - - -
All other locations
EMC All locations within specified main areas - -
Enclosure Submerged application - -
Below floorplates in engine room - - - -
All other locations

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


DNV Type Approval certificate: A-13709
DNV Location classes:
  • Temperature (D), Humidity (B), Vibration (A), Electromagnetic Compatibility (B), Ingress protection (IP30) or (IP66) with optional enclosure.
  • Environmental tests have been performed according to Lloyd’s Register Specification 1 (2002) for environmental categories ENV1, ENV2, and ENV3.

Tech Specs

Input Power

Supply Voltage

18 to 30 VDC

Power Consumption

5.4 W quiescent, 5.9 W with alarm

Current Consumption

225 mA quiescent, 245 mA with alarm

Fuse Rating:



Dimensions (W x H x D)

225 mm x 225 mm x 85 mm (8 7/8” x 8 7/8”x 3 3/8”)


1.9 kg (4.2 lbs.)

Computer design tool


IP Rating

IP 30 (optional IP66 enclosure)

Cable Access

4 x 25 mm (1”) cable entries

Cable termination:

Screw Terminal blocks 0.2–2.5 sq mm (30–12 AWG)

Alarm sensitivity range:

0.005% to 20% obs/m (0.0015% to 6.25% obs/ft)


3 Relays rated 2 A @ 30 VDC

Fire (NO)

Pre-Alarm (NO)

Alert/Fault (Maintenance & Isolate) (NC/NO)

Configurable as latching or non-latching

Event Log

Up to 12,000 events stored in FIFO format

Smoke level, alarms and faults with time and date stamp


Minimum 15 minutes, maximum 15 days.

Recommended minimum 1 day.

During AutoLearn thresholds are NOT changed from pre-set values.

Configurable General Input (24 VDC):

Standby, Mains OK or Reset/Isolate

Threshold Setting Range


0.005%–1.990% obs/m

(0.0015%–0.6218% obs/ft)


0.010%–1.995% obs/m

(0.0031%–0.6234% obs/ft)


0.015%–20.00% obs/m

(0.0046%–6.25% obs/ft)

Operating Conditions

Tested to

-25°C to 70°C (13°F to 158°F)


5°C to 70°C (41°F to 158°F) (recommended)

Sampled Air

-20°C to 60°C (-4°F to 140°F)


10% to 95% RH, non-condensing

Approved for use in bridge and deck zones, and ENV3 environments

Exposure to corrosive atmosphere may invalidate warranty

Sampling Network

Maximum Area of Coverage

800sq.m (8000sq.ft)


Internal Diameter

15 mm–21 mm (9 /16”–7 /8”)

External Diameter

25 mm (1”)

Maximum Pipe Lengths

1 x 80 m (260 ft), 2 x 50 m (164 ft)

Part Codes





Remote Display – VESDA VLC Marine


IP66 Detector Enclosure (incl fittings)




Contact Us