VESDA VLF-250

VLF-250

Approval: G 205060

The VESDA VLF-250 detector is a very early warning smoke detector designed to protect small, business-critical environments of up to 250 m2.
The VLF can be installed and commissioned out-of-the-box without the need for a special interface or software programming tools. The patent-pending Ultrasonic Flow Sensing used in the VLF provides a direct reading of the sampling pipe fl ow rate. The system is immune to air temperature and pressure changes and is unaffected by contamination. The VLF is the first air sampling smoke detector to use ultrasonic flow sensing.

  • Out-of-the-Box installation and commissioning
  • Ultrasonic airflow sensing
  • Laser-based absolute smoke detection
  • Programmable alarm thresholds
  • Clean air barrier optics protecti
  • AutoLearn™ Flow
  • AutoLearn™ Smoke
  • Event log – up to 18000 events

Additional Information:
Filter included in detector

Alarm current @ 24 V DC approx. 295 mA
Operating voltage 18 ... 30 V DC
Weight kg approx. 2 kg
Air humidity 10 ... 95 % (non-condensing)
Quiescent current @ 24 V DC approx. 220 mA
Type of protection IP30
Area to be monitored max. 250 m²
Ambient temperature -10 °C ... 38 °C
Dimensions W: 256 mm H: 183 mm D: 92 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 25 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

Promotional - Product Data Sheets

TypeNameSize
Product Data Sheet VESDA VLF-250 Version: 04.2017 200 KB