VESDA LaserFOCUS VLF-250

VLF-250 | VESDA LaserFOCUS VLF-250

Active stand-alone detection system based on laser technology for the early detection of fires in small areas. The actuation on the loop and the resetting function is carried out via the esserbus transponder (Part No. 808623). Actuation on a conventional line is carried out via the same transponder. The device requires a separate voltage supply of 24 V DC.

Part-No.:
VLF-250
Approval:
VdS

Features

  • Plug & play function (simple installation and commissioning)
  • Laser based smoke detection
  • Programmable alarm threshold value
  • Two-level air filtering
  • 10 digit integrated bargraph display
  • Integrated debugging function
  • Event memory for up to 18,000 events
  • Relay output: 3 changeover relays
  • Actuation and resetting is carried out via the esserbus transponder (Part No. 808623) during loop operation
  • Stand-alone system

Technical Data

Operating voltage 
18 ... 30 V DC
Hochgeschwindigkeitsreaktionszeit 
Explosionserkennung 
Zulassung für explosionsgefährdete Bereiche 
Spektrale Empfindlichkeit 
Reaktionszeit_a 
Empfindlichkeitsbereiche 
Erfassungsbereich 
Contact Ausgänge 
Contact Current 
Sensoren pro Hub 
Sensoren pro Controller 
Hubs pro Controller 
Angesaugte Lufttemperatur 
Länge der Abzweigleitung 
Lineare Rohrlänge 
Ansaugöffnungen 
Operation temperature 
Anzahl_der_Relaisausgänge 
Indication Output voltage 
Nominal frequency 
Hz
Rated voltage 
 
Operating voltage 
V DC
Operating voltage 
Voltage supply 
Quiescent current 
Quiescent current @ 9 V DC 
Quiescent current @ 12 V DC 
Quiescent current @ 19 V DC 
Quiescent current @ 24 V DC 
max. approx. 220 mA
Ruhestrom @ 28 V DC_comp 
Quiescent current @ FACP battery 
Quiescent current @ FACP battery 
 
Current consumption 
Alarmstrom @ 28 V DC_comp 
Current consumption @ 12 V DC 
Current consumption @ 24 V DC 
Current consumption 
Power consumption @ 5 V DC 
Power consumption @ 12 V DC 
Power consumption @ 24 V DC 
Alarm current @ 9 V DC 
Alarm current @ 12 V DC 
Alarm current @ 24 V DC 
approx. 295 mA
Starting current @ 24 V DC 
Starting current 
Current consumption in the case of failure 
Output current 
A
Power consumption 
Current consumption for ext. devices 
A
Battery capacity 
Contact load 
Contact load relay 
2 A @ 30 V DC NO/NC
Sensitivity 
0.005 % - 20% obs/m
Sound level 
Sound level @ 24 V DC 
Display 
Frequency of flash 
Hz
Lighting energy 
Range 
Connection terminal 
0.2 ... 2.5 mm²
Maximum tube length 
25 m
Area to be monitored 
250 m²
Height to be monitored 
Alignment angle 
Unempfindlichkeit gegenüber Gebäudebewegungen 
Air velocity 
Application temperature 
Response temperature 
Ambient temperature 
0 °C ... 40 °C
Storage temperature 
Wavelength 
nm
Connection 
Sampled Air Temperature 
Air humidity 
< 95 %
Air humidity 
Ex-category 
Ex. protection 
Type of protection 
IP 30
 
Housing 
Type 
Material 
 
Color 
Weight 
Weight 
approx. 2 kg
 
Luftfeuchtigkeit 
Cable length 
m
Maximum sensor length 
m
Rückseitige Bodenplatte 
mm
Detector specification 
EC-type examination certificate 
Specification 
EN 54-20, Class A, B, C
 
Dimensions 
W: 255 mm H: 185 mm D: 90 mm
 
 
Declaration of Performance 
Approval 

Accessories

VSP-005 VESDA Filter for VLP, VLS, VLF, VLC

Scope of delivery

Filter included in detector

Downloads

Produktdatenblatt
Ausschreibungstext

Product Data Sheet

Version: 2024-11

Language:
English
Doc extension:
pdf