PNED Laser scattering ASD L-P
Laser chamber
PNED L series aspirating smoke detector builds on the latest laser scattering technology providing ultra-high sensitivity to the smoke particles down to 200nm. Light sensors are placed in multiple directions of the radiation pathway in the laser chamber, collecting both forward and backward radiation diffraction signals. Advanced laser chamber with complete sealing configuration minimises the possibility of false alarm and reduces the need for maintenance.
Overview
Applications with complex environmental conditions often challenge the effectiveness of spot type smoke detectors. PNED Laser-based L series of aspirating smoke detectors are well designed for protecting valuable assets in these applications by offering a one-stop-solution for wide ranges of environmental impacts providing users with reliable and consistent performance.
Double-stages filtration
The embedded filter box provides three stages of filtration for the sampling airflow. Most airborne contamination particles are removed and trapped at the first stage eliminating severe environmental impact on the detector such as corrosive streams, dust particles and insects. In the second stage, the large smoke particles that could potentially damage the sensing unit are removed, delivering the detector with ready-to-test sampling airflow. The last filtration stage consists of multiple layers of HEPA material providing a clean air stream to the detector.
Airflow monitoring
All PNED series of ASD are equipped with the exclusive ultrasonic airflow monitoring technology (UAM), consistently monitoring the airflow characteristic via differential phase modulation technique. UAM can measure the airflow rate in real-time and examine any damage or leakage along the sampling pipeline providing users with long-term reliable service.
Power
Supply voltage
Sensitivity
Dimension
Weight
Aera coverage
Operating conditions
Airflow
Pipe length
No. of holes
IP rating
Pipe specifications
Cables
Threshold settings
L-P1
L-P4
2100W
24VDC
0.00001%obs/m
60mm×60mm×60mm
4kg
1000 square meters
Ambient:
Humidity:
Sampled air:
2.83L/mins
100m
100
IP40
Inner radius:
Outer radius:
10mm diameters
Alert:
Action:
Fire 1:
Fire 2:
2100W
24VDC
0.00001%obs/m
60mm×60mm×60mm
4kg
1000 square meters
Ambient:
Humidity:
Sampled air:
2.83L/mins
100m
100
IP40
Inner radius:
Outer radius:
10mm diameters
Alert:
Action:
Fire 1:
Fire 2:
-
Power exchange facilities
-
DataCom & TeleCom
-
Residential application
-
Administration building
-
Storage room
-
Warehousing
-
Historical architecture
-
Health care centre
-
Underground tunnel
-
Metro subway station
-
Cold storage
-
Power plant
-
Energy storage facilities
-
Industrial
-
Museum
-
Public transportation
-
Mining
-
Manufacturing
-
The large particle rejection technique removes unwanted particle nuisance reducing the possibility of false alarms and maintenance costs;
-
Ultra-sonic airflow monitoring system ensures stable sampling airflow;
-
The Embedded HPFA filter box provides long term filtration for up to 10 years;
-
On-field inspection for a quick check of potential fire threat via camera (optional);
-
Exclusive RS485 transmission line deliveries higher baud rate and fully compatible with pre-existing RS485 network;
-
Two sampling configurations are available for all range of applications: Single-pipeline and Four-pipeline configurations;
-
Four alarm levels.
PNED L-P4
Four-pipeline configuration
PNED L-P1
Single-pipeline configuration
All series of Laser-scattering aspirating smoke detectors
