Approval: G298024

The VESDA VLS detector has an alarm sensitivity range of 0.005%–20% obscuration/m (0.0015%–6.25% obscuration/ft). The VLS is classed as a “Very Early Warning Smoke Detector”, which means that it detects fire at the earliest possible stage and reliably measures very low to extremely high concentrations of smoke.
The detection chamber uses a stable Class 1 laser light source and carefully positioned sensors to achieve the optimum response to a vast range of smoke types. The status of the detector, and all alarm, service and fault events, are transmitted to displays and external systems via VESDAnet.
It also includes a valve mechanism in the inlet manifold and software to control the airflow from the four sectors (pipes). This configuration enables a single VESDA zone to be divided into four separate sectors, for example, distinguishing between separate voids within a room.

  • 4 configurable alarm levels
  • Four inlet pipes
  • 7 or 12 programmable relay options
Alarm current @ 24 V DC approx. 300 mA
Operating voltage 18 ... 30 V DC
Weight kg approx. 4 kg
Air humidity 10 ... 95 % (non-condensing)
Quiescent current @ 24 V DC max. 280 mA
Type of protection IP30
Area to be monitored max. 2000 m²
Ambient temperature -10 °C ... 38 °C
Dimensions W: 350 mm H: 225 mm D: 125 mm
Contact load relay 2 A @ 30 V DC NO/NC contacts
Alarm sensitivity 0.005%–20% obs/m
Cable termination 0.2–2.5 sq mm
Max. single pipe length 100 m
Max. total branched pipe length
200 m
Aspirated air temperature -20 °C ... 60 °C
Specification EN 54-20, Class A, B, C
  • VSP-005 VESDA Filter for VLP, VLS, VLF, VLC

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Product Data Sheet VESDA VLS Version: 04.2017 884 KB