Chapter 1: Introduction
2 Alarmline II Digital Linear Heat Sensor Cable Technical Manual
Overview
Alarmline II Digital Sensor Cables are a flexible durable and cost-effective form of
fire detection, suitable for protecting a wide range of commercial and industrial
applications.
They provide flexibility in installation enabling them to be used for general area
protection or proximity detection close to a specific point of risk. A wide range of
alarm temperatures, protective coatings, and installation fixings ensure system
design and installation is specific to the risk. Alarmline II Digital Sensor Cables
are especially suited for use in confined areas or areas with harsh environmental
conditions where the use of other forms of detection is limited.
Alarmline II Digital Sensor Cables can be easily integrated to any fire control
panel through a monitored input (a conventional detection zone, zone monitor
unit, or switch monitor unit, etc.). The Digital Location Control Unit provides
additional functionality to the Alarmline II Digital Sensor Cable system by being
able to determine the alarm location along extended lengths of digital sensor
cable (up to 3000 m).
This manual provides technical information, installation guidelines, and design
recommendations for a selection of typical applications (it does not cover all
possible applications – contact Kidde Products Ltd. technical support for further
design and installation advice).
Operation
Alarmline II Digital Sensor Cables are constructed from a twisted pair of tri-
metallic conductors covered with an advanced temperature-sensitive polymer. A
protective outer coating is then extruded over the twisted pair.
Figure 1: Cable construction
Advanced temperature-sensitive polymer
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