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VLF-500-UL LASER FOCUS ASPIRATING SMOKE DETECTOR
The VESDA VLF by Xtralis is an aspirating smoke detector ideal for small, business-critical spaces. Available in two models, the VLF-250 covers up to 250 m2 (2,690 sq. ft.), and the VLF-500 covers areas up to 500 m2 (5,380 sq. ft.).
The detector works by continually drawing air into sampling holes in a pipe network. The air is filtered and passed into a detection chamber where light scattering technology detects the presence of very small amounts of smoke. Detector status information is communicated on the detector display and via relays or optional interface cards.
Product Description
- Out-of-the-box installation and commissioning
- Ultrasonic airflow sensing
- Laser-based absolute smoke detection
- Pre-engineered pipe network designs
- Programmable alarm thresholds
- Clean air barrier optics protections
- Instant recognition display
- Instant Fault Finder™
- AutoLearn™ Smoke
- AutoLearn™ Flow
- Field service access door
- Multiple event logging (in separate logs), up to 18,000 events
- Offline/online configuration capability
- Input Power Voltage: 24V DC nominal (18–30V DC range)
- Current Consumption: 410 mA (nominal), 490 mA (in alarm)
- Dimensions (W × H × D): 256 × 183 × 92 mm (10 1/16 in × 7 1/5 in × 3 2/3 in)
- Weight: 4.4 lbs (approx. 2 kg)
- IP Rating: IP30
- Mounting: Upright, inverted, or horizontal
- Operating Temperature (Ambient): 0°C to 39°C (32°F to 103°F)
- Sampled Air Temperature: -20°C to 60°C (-4°F to 140°F)
- Humidity: 5% to 95% RH (non-condensing)
- Maximum Pipe Length (Single): 50 m (150 ft) with max. 16 holes
- Maximum Pipe Length (Dual Branch): 30 m (90 ft) per branch with max. 8 holes per branch
- Sampling Hole Options: Pre-engineered or via ASPIRE™ pipe modelling tool
- Air Inlet Pipe Size: 25 mm (metric) or IPS ¾ in (21 mm)
- Coverage Area: Up to 500 m² (5,380 sq. ft.), depending on standards
- Relay Outputs: 3 changeover relays (Fire 1, Action, Fault)
- Relay Contact Rating: 2A @ 30 VDC (max), NO/NC contacts
- Cable Entries: 3 × 25 mm (11/16 in) – 1 rear, 2 top
- Cable Termination: Screw terminals (30–12 AWG / 0.2–2.5 mm²)
- Interfaces: RS232 programming port and GPI interface
- GPI Functions: Reset, Disable, Standby, Alarm Set 1, Alarm Set 2, External Input
- Alert & Action Threshold Range: 0.008–0.625% obs/ft (0.025–2.00% obs/m)
- Fire 1 & Fire 2 Threshold Range: 0.008–6.25% obs/ft (0.025–20.00% obs/m)
- Alarm Delay: 0–60 seconds
- Dual Alarm Threshold Modes: Time-based or GPI-based
- Display Features: 4 alarm indicators, smoke level indicator, fault & disabled indicators
- Controls: Reset, Disable, Test
- Additional Features: Instant fault finder, smoke & flow AutoLearn
- Event Log Capacity: Up to 18,000 events
- Logged Data: Smoke level, flow level, detector status, faults
- Logging Type: Time and date stamped, non-volatile
- AutoLearn Duration: Minimum 15 minutes, maximum 15 days (default 14 days)
- AutoLearn Function: Automatically sets smoke and airflow thresholds
- Note: Pre-set thresholds remain unchanged during learning
- Warranty: 2 years
