Heat Detection System (HDS)

Heat Detection System (HDS) is designed to provide early detection of fire and overheating. HDS will detect fire and overheating in circumstances where other forms of detection would not be viable, either due to inability to sustain the environment requirements or through prohibitive costs. This allows you to respond to threats of fire rapidly. LHDC may be installed with the ability to trigger alarms for hot spots occurring on very small sections of the overall cable and, providing the LHDC has not been subjected to excessive temperatures.

Analogue HDS

Analogue HDS is designed to provide early detection of fire and overheating in circumstances where other forms of detection would not be viable, either due to inability to sustain the environmental requirements or through prohibitive costs.

How Analogue HDS works?

Analogue HDS is a coaxial cable constructed with a copper coated steel central conductor, an inner insulation (dielectric), a tinned copper braid layer and an overall protective sheath. Additional over sheaths are available for mechanical protection with Stainless Steel armour and nylon to provide resistance to Chemicals and Ultra Violet radiation. The primary mechanism of heat (fire) detection is that the resistance of the dielectric is monitored between the central conductor and braid layer, which has a negative temperature coefficient (NTC). Analogue Heat Detection Cable is employed in conjunction with an end of line terminating device for continuity monitoring and a zone monitoring controller providing adjustable alarm thresholds and Fire and Fault outputs.

Digital HDS

The Digital HDS comprises of a twisted pair, two core cable. Digital LHDC operates at fixed temperatures and is non-resettable.

How Digital HDS works?

The Digital LHDC operates by reacting to heat (fire). The insulators between the two conductors plasticise at the design temperature, creating a switch circuit at the point of operation. The Linear Heat Detection Cable is employed in conjunction with an end of line terminating device for continuity monitoring and a zone monitoring controller to provide outputs for Fire and Fault. An LHDC controller with Distance Location (up to 2000m) to the point of operation is also available. As the Digital LHDC provides a simple switched output on operation, the LHDC can be monitored by a conventional or Analogue Addressable zone monitor.

Solution Components

Benefits of the HDS