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VESDA VLF-250 | LaserFocus Aspirating Smoke Detector
INC VAT
Code: FDS331/534
The VESDA VLF-250 detector is a very early warning smoke detector designed to protect small, business-critical environments of less than 250 m2 (2,690 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.
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 protection
Instant Recognition Display
Instant Fault Finder
AutoLearn Smoke
AutoLearn Flow
Field Service Access Door
Multiple Event Logging in separate logs
Event log up to 18000 events
Offline/online configuration capability
Up to 250 m2 (2,690 sq. ft.)
Specification | Details |
---|---|
Input Power Voltage | 24V DC Nominal (18-30 V DC) |
Current @ 24 VDC | 220 mA nominal, 295 mA in alarm |
Dimensions (W x H x D) | 256 mm x 183 mm x 92 mm (101/16 in x 71/5 in x 32/3 in) |
Weight | Approx. 2 kg (4.4 lbs) |
IP Rating | IP30 |
Mounting | Upright, inverted or horizontal |
Operating Conditions | Ambient: 0°C to 38°C (32°F to 100°F) |
Sampling Network | Maximum pipe lengths: 1 x 25 m (80 ft) (Max. 12 holes) |
Sampling Hole Options | Pre-Engineered Option or Maximum Pipe length in accordance with Pipe Modelling Design Tool (ASPIRE™) |
Air Inlet Pipe | Accepts both metric and American standard pipe sizes |
Area Coverage | Up to 250 m² (2,690 sq. ft.), depending on local codes and standards |
Relay Outputs | 3 changeover relays (Fire 1, Action, Fault), Contacts rated 2A @ 30 VDC (max). NO/NC Contacts |
Cable Access | 3 x 25 mm (1.05 in.) cable entries (1 rear entry, 2 top entry) |
Cable Termination | Screw Terminals 0.2-2.5 mm² (30-12 AWG) |
Interfaces | RS232 Programming Port. General Purpose Input (GPI) interface offers: Reset, Disable, Standby, Alarm set 1, Alarm set 2, External Input functions |
Alarm Threshold Setting Range | Alert, Action: 0.025 - 2.00% obs/m (0.008 - 0.614% obs/ft) |
Individual Alarm Delays | 0 – 60 seconds |
Two Alarm Threshold Settings | Either time or GPI based |
Display | 4 Alarm State Indicators |
Event Log | Up to 18,000 events, time and date stamped in separate, non-volatile logs for: Smoke Level, Flow Level, Detector Status, and Faults |
AutoLearn Smoke & Flow | Automatically sets acceptable alarm thresholds for both smoke and flow levels |
The VESDA VLF-250 detector is a very early warning smoke detector designed to protect small, business-critical environments of less than 250 m2 (2,690 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.
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 protection
Instant Recognition Display
Instant Fault Finder
AutoLearn Smoke
AutoLearn Flow
Field Service Access Door
Multiple Event Logging in separate logs
Event log up to 18000 events
Offline/online configuration capability
Up to 250 m2 (2,690 sq. ft.)
Specification | Details |
---|---|
Input Power Voltage | 24V DC Nominal (18-30 V DC) |
Current @ 24 VDC | 220 mA nominal, 295 mA in alarm |
Dimensions (W x H x D) | 256 mm x 183 mm x 92 mm (101/16 in x 71/5 in x 32/3 in) |
Weight | Approx. 2 kg (4.4 lbs) |
IP Rating | IP30 |
Mounting | Upright, inverted or horizontal |
Operating Conditions | Ambient: 0°C to 38°C (32°F to 100°F) |
Sampling Network | Maximum pipe lengths: 1 x 25 m (80 ft) (Max. 12 holes) |
Sampling Hole Options | Pre-Engineered Option or Maximum Pipe length in accordance with Pipe Modelling Design Tool (ASPIRE™) |
Air Inlet Pipe | Accepts both metric and American standard pipe sizes |
Area Coverage | Up to 250 m² (2,690 sq. ft.), depending on local codes and standards |
Relay Outputs | 3 changeover relays (Fire 1, Action, Fault), Contacts rated 2A @ 30 VDC (max). NO/NC Contacts |
Cable Access | 3 x 25 mm (1.05 in.) cable entries (1 rear entry, 2 top entry) |
Cable Termination | Screw Terminals 0.2-2.5 mm² (30-12 AWG) |
Interfaces | RS232 Programming Port. General Purpose Input (GPI) interface offers: Reset, Disable, Standby, Alarm set 1, Alarm set 2, External Input functions |
Alarm Threshold Setting Range | Alert, Action: 0.025 - 2.00% obs/m (0.008 - 0.614% obs/ft) |
Individual Alarm Delays | 0 – 60 seconds |
Two Alarm Threshold Settings | Either time or GPI based |
Display | 4 Alarm State Indicators |
Event Log | Up to 18,000 events, time and date stamped in separate, non-volatile logs for: Smoke Level, Flow Level, Detector Status, and Faults |
AutoLearn Smoke & Flow | Automatically sets acceptable alarm thresholds for both smoke and flow levels |
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