 Alarmline
Digital Linear Heat Sensor is a twin conductor cable
with temperature-sensitive insulation protected by a special
braid, PVC or fluoropolymer outer sheath to meet specific
application requirements.
This concept of point-of-risk
detection can also be employed as cabling for electrical
fire alarm systems - subject to Local Standards (eg British
Standards) or customer specification restrictions.
SPECIFICATION
- Twin-conductor switching heat sensing cable
- Effective monitoring at precise point of risk
- Economical, reliable and durable detection
- Simple and easy to install
- Applied where other types of fire detection are unsuitable
- Environmental -65°C to +200°C
- 5 detection temperature ranges from 61°C to 238°C
- Cable length 0-10Km
- Simple interface to any BS5839 system
- Fully monitored
- Full range of installation accessories available
- Various outer sheath options.
- Cable available pre-cut length 50m - 10,000m (50m variables)
APPLICATIONS
- Car Parks
- Cable Tunnels
- Cable Tray
- Conveyor Belts
- Escalators
- Moving Walkways
- Bulk Storage Racks
- Floor & Ceiling Voids
OPERATION
Alarmline Digital cable operates by shortcircuiting
in a fire condition or where acceptable operating temperature
levels are exceeded, to provide a quick, positive and reliable
signal.
Alarmline Digital may be used as a standalone
detection facility with a sensor open circuit (FAULT) or
short circuit (FIRE) condition, monitored by an associated
simple electrical device.
As an integral part of a fire protection
system, Alarmline Digital cable may be used as a conventional
detector and operate automatic extinguishing systems via
an Extinguishing Control Panel (ECP).
Alarmline Digital is a cable and detector
in one. It can be installed close to potential sources of
fire, and provides economical detection for a wide range
of applications.
INSTALLATION
Ease of handling and stripping of the cable
permits quick installation and allows conventional or proprietary
methods of support to be employed.
Nail type cable clips should not be used.
Care must be taken to avoid mechanical impact, kinking,
unacceptable heat sources or other factors which may affect
the integrity and functionality of the cable.
APPROVALS
- FM Global approval granted to all Alarmline Digital
Cable variants
- UK Power Generation Industry (formerly CEGB) Approval
category "A" approval granted to 26794-2xx/H8045
- Factory Mutual
- Chinese power generation authorities
- BASEEFA
- Vds
- Chinese Approval (Shenyang)
AVAILABLE
LENGTHS
Alarmline Digital cables are available in lengths of 50
metres, 100 metres, and then 100 metre increments up to
1000 metres.
Note: Refer to table for Part Number crossreference.
Short lengths of cable may be joined by crimp connectors,
using a crimping tool to achieve longer sensor runs.
DIGITAL CABLE
Employing a twin conductor ‘switching’ cable,
the Alarmline Digital system operates by melting of internal
insulation between the conductors at a predetermined temperature.
This allows a short circuit which is detected by a simple
electrical device, to provide a fire alarm signal. Fault
conditions are detected by continuous monitoring for an
open circuit state.
SENSOR CABLE SUPPORTS
A comprehensive range of support hardware and clips are
available to suit any installation.
| CODE |
Maximum
Ambient
Temp(°C) |
Minimum
Alarm
Temp(°C) |
Maximum
Alarm
Temp(°C) |
Appropriate
Detection Time
(secs)-small flame |
Application |
| CH/H8040 |
45 |
61 |
70 |
4 |
Internal only |
| CH/H8040N |
45 |
61 |
70 |
4 |
Internal/External |
| CH/H8045 |
45 |
79 |
90 |
5 |
Internal only |
| CH/H8045N |
45 |
79 |
90 |
5 |
Internal/External |
| CH/H8028 |
70 |
97 |
113 |
10 |
Internal/External |
| CH/H8069 |
105 |
176 |
189 |
20 |
Internal/External |
| CH/H8050 |
200 |
216 |
257 |
20 |
Internal/External |
|
* Provides Ultra Violet (UV) Stabilisation
|
