VESDA Remote Display modules provide real-time indication of the status of a VESDA detector. They have a 20-segment vertical bar graph display, a 2 digit numeric display, an audible sounder, clear alarm and fault indicators. They also have 4 push button keys to control the detector and the mode of the display. The Display Module can be mounted into a detector unit, a remote mounting box or a 19in sub rack. Several displays can be configured to display information from a single detector in multiple locations. There are various versions of the display module depending on the type of detector and the relay configuration required. The VESDA VLS display has a fourth mode for the Numerical Display which shows the First Alarm Sector (FAS), this being the number of the sector (pipe) that has detected smoke. For the VESDA VLC the Fire 2 LED is omitted.
Smoke levels are continuously shown on a bar graph display where each illuminated segment indicates the current level of detected smoke. The top segment of the bar graph indicates the Fire 1 smoke threshold level and each segment below that level represents 1/20 of the Fire 1 smoke threshold level. To the left of the bar graph are the Fire 1, Action and Alert smoke threshold indicators. At a glance these provide a visual representation of the programmable alarm thresholds showing how close the smoke level is to
triggering the next level of alarm.
High intensity flashing LEDs provide a clear indication of the fire condition and are accompanied by an audible warning appropriate to the alarm condition. Similarly, any fault condition is indicated by a series of LEDs and an audible tone providing a comprehensive range of status information. The audible warning is easily silenced by pressing the Silence button at which point any flashing LEDs are illuminated until the cause of the event is identified, rectified and the system reset.
A 2 digit numerical readout has a number of modes that are indicated by up to four LEDs:
– The current smoke level in % obscuration/m (% obscuration/ft)
– Fire 1 threshold in % obscuration/m (% obscuration/ft). This is the sensitivity of the detector.
– The VESDA zone number
– First Alarm Sector on the VLS display – the numeric readout shows the sector (pipe) number that has detected smoke.
Push Button Keys
Four large tactile push button keys enable users to reset, isolate or silence the detector and control the mode of the display module. The buttons can be disabled to prevent operation of it’s functions. A lamp test routine is initiated by pressing the Mode key for two seconds. A Manual Scan can be initiated on the VLS by holding the Silence button for 2 seconds.
– Provides Immediate Status Reporting for a Single VESDA Zone
– Allows Zone Control of Assigned VESDA Detector
– High Intensity Alarm LEDs
– Remote Relay Option
– 20-Segment Vertical Bar Graph Display
– Alarm Threshold Indicators
– Built-In Sounder for Audible Warning
– Comprehensive Fault Reporting
– Multi-mode Numeric Display (defaults to smoke obscuration)
– Recessed Mounting Option
Operating Voltage (When used in detector unit, remote unit, or 19″ rack): 18 to 30Vdc
Operating Temp: 0 to 39° C
Relative Humidity: 10 to 95% (non-cond.)
Dimensions (HWD): 130x105x30mm
Operating Current: 60mA
Alarm Current: 80mA @24Vdc
Mounted in Remote Box –
Dimensions (WHD): 140 mm x 150 mm x 85 mm (5.5 in x 5.9 in x 3.4 in)
Operating Current: 90mA
Alarm Current: 110mA @24Vdc
The VESDA VRT-800 is a remote scanner display with a remote termination card. 12 Relays.