Essential details
Specification Number:VLF-500
Product Introduction
The VESDA VLF-500 detector is a very early warning smoke detector designed to protect small, business-critical environments of less than 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.
Out-of-the-Box Operation
The VLF can be installed and commissioned out-of-the-box without the need for a special interface or software programming tools.
In operation, the unique Smoke DialTM display provides the user with an instant understanding of a smoke event, even from a distance. Should a fault occur, the user simply opens the field service door and activates the Instant Fault Finder feature to determine the specific fault condition. This information can then be passed onto their fire service company, ensuring that service technicians arrive onsite fully prepared.
Ultrasonic Flow Sensing
The patented Ultrasonic Flow Sensing used in the VLF provides a direct reading of the sampling pipe flow 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.
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 Operation
The VLF can be installed and commissioned out-of-the-box without the need for a special interface or software programming tools.
In operation, the unique Smoke DialTM display provides the user with an instant understanding of a smoke event, even from a distance. Should a fault occur, the user simply opens the field service door and activates the Instant Fault Finder feature to determine the specific fault condition. This information can then be passed onto their fire service company, ensuring that service technicians arrive onsite fully prepared.
Ultrasonic Flow Sensing
The patented Ultrasonic Flow Sensing used in the VLF provides a direct reading of the sampling pipe flow 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.
Features
• 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 500 m2 (5,380 sq. ft.) coverage
• 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 500 m2 (5,380 sq. ft.) coverage
Listings / Approvals
• CCC
• FM Class I Div II
• ActiveFire (ISO/AS 7240-20)
• CE
• UKCA
• LPCB
• VdS
• NF
• EN 54-20
Class A (30 holes / 0.05% obs/m)--
Class B (30 holes / 0.15% obs/m)
Class C (30 holes / 0.32% obs/m)
Classification of any configuration is determined using ASPIRE.
Regional approvals listings and regulatory compliance vary between product models. Refer to www.xtralis.com for the latest product approvals matrix.
Specifications
Input Power Voltage: 24V DC Nominal (18-30 V DC)
410 mA nominal, 490 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)
Sampled Air: -20°C to 60°C (-4°F to 140°F) *
Humidity: 5% to 95% RH, non-condensing
* Sampled Air temperature shall reach Ambient Detector temperature
upon entry into Detector. Refer to Xtralis Design Guides & Application
Notes for sampled air pre-conditioning.
Sampling Network
• Maximum pipe lengths: 1 x 50 m (150 ft) (Max. 24 holes)
2 x 30 m (90 ft) per branch (Max. 12 holes per branch)
• 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
Metric: 25 mm (1.05 in.) American Pipe: IPS 21 mm (¾ in.)
Area Coverage Up to 500 m2 (5,380 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 (11/16
in.) cable entries (1 rear entry, 2 top entry)
Cable Termination Screw Terminals 0.2-2.5 mm2 (30-12 AWG)
Interfaces
Shown in Terminal Block Connections diagram, to right, plus an RS232 Programming Port. General Purpose Input (GPI)
interface offers: Reset, Disable, Standby, Alarm set 1, Alarm set
2 and External Input functions.
Alarm Threshold Setting Range
Alert, Action: 0.025 - 2.00% obs/m (0.008 - 0.614% obs/ft)
Fire 1, Fire 2: 0.025 - 20.00% obs/m (0.008 - 6.575% obs/ft)
Individual Alarm Delays: 0 – 60 seconds
Two Alarm Threshold Settings: Either time or GPI based
Display
• 4 Alarm State Indicators
• Smoke Level Indicator
• Reset, Disable and Test Control
• Fault and Disabled Indicators
• Instant Fault Finder
• Smoke and Flow AutoLearn Controlss
Event Log
Up to 18000 events, time and date stamped in separate, nonvolatile, logs for:
Smoke Level, Flow Level, Detector Status and Faults
AutoLearn Smoke & Flow
• Automatically set acceptable alarm thresholds for both smoke and flow levels
• Minimum 15 minutes, maximum 15 days (default 14 days)
• During AutoLearn thresholds are NOT changed from pre-set values
Input Power Voltage: 24V DC Nominal (18-30 V DC)
410 mA nominal, 490 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)
Sampled Air: -20°C to 60°C (-4°F to 140°F) *
Humidity: 5% to 95% RH, non-condensing
* Sampled Air temperature shall reach Ambient Detector temperature
upon entry into Detector. Refer to Xtralis Design Guides & Application
Notes for sampled air pre-conditioning.
Sampling Network
• Maximum pipe lengths: 1 x 50 m (150 ft) (Max. 24 holes)
2 x 30 m (90 ft) per branch (Max. 12 holes per branch)
• 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
Metric: 25 mm (1.05 in.) American Pipe: IPS 21 mm (¾ in.)
Area Coverage Up to 500 m2 (5,380 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 (11/16
in.) cable entries (1 rear entry, 2 top entry)
Cable Termination Screw Terminals 0.2-2.5 mm2 (30-12 AWG)
Interfaces
Shown in Terminal Block Connections diagram, to right, plus an RS232 Programming Port. General Purpose Input (GPI)
interface offers: Reset, Disable, Standby, Alarm set 1, Alarm set
2 and External Input functions.
Alarm Threshold Setting Range
Alert, Action: 0.025 - 2.00% obs/m (0.008 - 0.614% obs/ft)
Fire 1, Fire 2: 0.025 - 20.00% obs/m (0.008 - 6.575% obs/ft)
Individual Alarm Delays: 0 – 60 seconds
Two Alarm Threshold Settings: Either time or GPI based
Display
• 4 Alarm State Indicators
• Smoke Level Indicator
• Reset, Disable and Test Control
• Fault and Disabled Indicators
• Instant Fault Finder
• Smoke and Flow AutoLearn Controlss
Event Log
Up to 18000 events, time and date stamped in separate, nonvolatile, logs for:
Smoke Level, Flow Level, Detector Status and Faults
AutoLearn Smoke & Flow
• Automatically set acceptable alarm thresholds for both smoke and flow levels
• Minimum 15 minutes, maximum 15 days (default 14 days)
• During AutoLearn thresholds are NOT changed from pre-set values
Ordering Information
| Ordering Code | Description | Ordering Code | Description |
| VLF-500-00 | VESDA VLF. European language set. English display labels | VIC-010 | VESDAnet Interface Card |
| VLF-500-01 | VESDA VLF. European language set. International display labels | VIC-020 | Multifunction Control Card (MCC) |
| VLF-500-02 | VESDA VLF. English + Asian language set. International display labels | VIC-030 | Multifunction Control Card (MCC) with Monitored Powered Output (MPO) |
| VLF-500-03 | VESDA VLF. Scandinavian language set. International display labels | VIC-005 | Filter Cartridge |
| VLF-500-04 | VESDA VLF. English + Russian language set. International display labels | VIC-715 | Aspirator for VESDA VLF-500 |
| VLF-500-05 | VESDA VLF. English + Eastern Euro language set. International display labels | ||