VESDA VLF-250-00 LaserFOCUS Small Area Aspirating Detector (25m Pipe)

The Xtralis VESDA VLF-250-00 is a very early warning aspirating smoke detector for small, business-critical environments of up to 250 m². It continually draws air through sampling holes in a pipe network, filters it and uses laser light-scattering detection to sense very small amounts of smoke. This model has the European language set with English display labels.

Key features

• Out-of-the-box installation and commissioning, with no special interface or programming tool needed
• Patented ultrasonic airflow sensing, unaffected by air temperature, pressure or contamination
• Laser-based absolute smoke detection with clean air barrier optics protection
• Smoke Dial display with Instant Fault Finder behind the field service access door
• AutoLearn Smoke and AutoLearn Flow set suitable alarm and flow thresholds automatically
• Event log of up to 18,000 events
• Optional interface cards: VIC-010 VESDAnet card, VIC-020 and VIC-030 multifunction control cards

Technical specifications

• Part number: VLF-250-00 (European language set, English display labels)
• Area coverage: up to 250 m², depending on local codes and standards
• Maximum pipe length: 1 x 25 m (max. 12 holes) or 2 x 15 m per branch (max. 6 holes per branch)
• Pipe inlet: 25 mm metric or ¾" IPS (21 mm)
• Supply voltage: 24 VDC nominal (18-30 VDC)
• Current at 24 VDC: 220 mA nominal, 295 mA in alarm
• Relay outputs: 3 changeover relays (Fire 1, Action, Fault), contacts rated 2 A at 30 VDC
• Alarm thresholds: Alert and Action 0.025-2.00% obs/m; Fire 1 and Fire 2 0.025-20.00% obs/m; delays 0-60 s
• EN 54-20: Class A, B and C (12 holes)
• Approvals: CCC, FM Class I Div II, ActivFire, CE, UKCA, LPCB, VdS, NF, EN 54-20
• Dimensions (W x H x D): 256 x 183 x 92 mm
• Weight: approx. 2 kg
• IP rating: IP30
• Operating conditions: ambient 0°C to 38°C; sampled air -20°C to 60°C; 5-95% RH non-condensing
• Cable entries: 3 x 25 mm (1 rear, 2 top); screw terminals 0.2-2.5 mm²