Edwards ModuLaser Installation Manual page 94

Chapter 5: Technical specifications
Aspirating system
Detection principle
Laser (detector module)
Safety class
Laser diode
Sensitivity range
%obs/m
%obs/ft.
Particle sensitivity range
Alarm levels
Fan speed
Air flow measurement
Range
Resolution
Note: Absolute readings of air velocity
(temperature compensated)
Duct air velocity
Sampling pipe inlets
Exhaust pipe
Pipe size (external diameter)
Pipe length
Single pipe
Combined, with up to 3 t-pieces
Sampling holes per pipe
(EN 54-20 sensitivity class)
Average sound pressure level
Chart record
Event log
88
Laser light scattering mass detection
Class 1
Class 3B
25% min.
0.03% max. FSD
7.62% min.
0.00914% max. FSD
0.0003 to 10 microns
4 (Alert/Aux. Alarm, Prealarm, Fire Alarm, Fire
Alarm 2)
Configurable (1 to 16)
1 m/s to 6 m/s (3.3 ft./s to 19.6 ft./s)
0.05 m/s (0.16 ft./s)
1219 m/min max. (4000 ft./min) (UL)
1 per detector module
1 per detector module
26.75 mm and 25.0 mm Ø (1.050 in. and 0.984
in.)
150 m max.
250 m max.
20 holes max. for Class A (most sensitive)
40 holes max. for Class B
50 holes max. for Class C (least sensitive)
38.8 dBA (fan speed 6)
From 1 month at 1 s resolution up to 5 years at
60 s resolution per detector module
20,000 events per module
ModuLaser Modular Aspirating Smoke Detector Installation Manual