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FIRE ALARM SYSTEMS - ALARMLINE LINEAR HEAT DETECTION CABLE

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

Detailed documentation

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