Linear Heat Detection



Linear Heat Detection (LHD) provides fast and reliable detection of fire or overheating. It is suitable for use in most environments and is unaffected by airflow, hazardous chemicals or contaminants and for other areas where traditional detection types may underperform.

A Linear Heat Detection system typically consists of at least one length of heat sensing cable and one controller. The heat sensing cable is installed along or around the area to be protected. Heat sensing cable is available with a variety of outer coatings making it suitable for a range of different applications. 

When a fire or overheat event occurs, the temperature of the cable increases. Once the cable reaches a predefined temperature, the controller reports an event to the fire alarm control panel. The controllers can also provide the location of the event to allow fires or potential fires to be quickly identified and dealt with. 

Typical Applications

Linear Heat Detection is well suited to a variety of applications, including:

  • Cable Trays

    Cable trays and carriers are found in every commercial building, from power stations to shopping centres, and are most often hidden in ceiling voids. Overheating cables pose a major risk of fire that is difficult to detect. Therefore, heat sensing cable often provides a suitable detection solution.

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  • Conveyor Belts

    Conveyor belts often carry potentially combustible materials such as coal or cardboard which pose a high risk of fire. In this situation heat sensing cable, combined with addressable technology, can identify the exact location of a potential fire.

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  • Floating and Fixed Roof Tanks

    In floating or fixed roof tanks where there is a potential fire risk, Fyreline heat sensing cable can be used around the rim of the roof to detect the early stages of a developing fire.

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  • Tunnels

    Fires in vehicle tunnels can pose a severe risk to the tunnel’s infrastructure. By combining heat sensing cable with addressable technology, the location of a fire can be accurately pinpointed so fires can be dealt with in a timely fashion. Likewise, services or maintenance access tunnels also can also benefit from a similar fire detection solution.

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  • Car Parks

    Due to the high risk of false alarm caused by exhaust fumes, conventional smoke detection can not be used reliably in a car park environment. Therefore, a large number of heat detectors are required to provide suitable protection. On top of this, many countries require heat proof cabling to be used to interconnect the heat detectors, making installation expensive. Linear heat detection provides a cost effective solution for this kind of application.

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  • Escalators

    Linear heat detection can be used to detect a buildup of heat or fire in the mechanical workings of an escalator. In many countries the use of heat sensing cable is mandatory.

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  • Warehouse Racking

    Heat sensing cable can be used in large, automated warehouse facilities to protect storage racks.

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  • Thatched Roofs

    Thatched roofs are at risk from fire caused by hot gases escaping through cracks in chimney brick work. FyreLine linear heat detection can provide continuous monitoring of a thatched roof by placing the cable in the thatch and around the chimney.

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  • Waste Recycling Facilities

    Waste recycling facilities often contain vast amounts of potentially flammable waste. Impromptu chemical reactions, build up of flammable gases and risk of self-combustion all contribute to a high risk of fire. Large, vulnerable storage areas, the use of conveyors and the need to pinpoint potential fires make a waste recycling facility the ideal candidate for a linear heat detection system.

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  • Hazardous Areas

    Hazardous areas that are used to house paint, solvents, spirits and similar flammable materials require any electrical equipment, including fire detection equipment, to be either intrinsically safe or explosion proof. FyreLine heat detection can be easily made intrinsically safe, therefore proving an ideal fire detection solution for hazardous areas.

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  • Power Stations

    Power stations contain a number of ideal locations for heat sensing cable. Conveyor belts, car parks, access tunnels, hazardous areas, computer banks, warehouse storage and many other areas make power stations one of the biggest consumers of heat sensing cable.

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  • Ships and Marine

    Both commercial and industrial ships carry a variety of risk areas, such as galleys, car decks, cable trays, engine rooms and plant rooms, that are difficult to protect. Fyreline provides a robust solution that is available with increased chemical protection, reducing the risk of corrosion.

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  • Barns and Stables

    Barns and stables are large, voluminous areas with high ceilings that are used to house live stock. They are at risk from combustible fodder and bedding as well as electrical and mechanical equipment. FyreLine heat sensing cable can be placed in ceilings and around fixed machinery to provide a reliable detection solution that is not affected by the chemicals and UV exposure that may be present.

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Why Choose Eurofyre?

Eurofyre has been responsible for the supply of specialist Linear Heat Detection since 2007.
Europe’s Most Active Suppliers
Eurofyre is one of Europe’s most active suppliers of Linear Heat Detection products and supports a growing number of installers, integrators and maintainers throughout the UK and EU.
Complete System Supplier
Eurofyre supplies all aspects of Linear Heat Detection including Heat Sensing Cable, LHD Controllers, LHD Power Supplies and LHD fittings. We can provide expert advice and consultation for all installations and have a large stock holding of all Linear Heat Detection products with leading logistics solutions.
Demonstration and Training
We have a sophisticated training facility where we offer demonstrations and expert training on a range of systems, including Linear Heat Detection systems. Eurofyre offers both in-house and remote training.
Technical Support
Eurofyre offers both on-site and remote support to assist you in ensuring that your system is fully functional and operating at maximum efficiency. Our after-sales care and support are second to none. We can also provide on-site services such as commissioning and maintenance assistance.

The FyreLine Linear Heat Detection Range

There are three different types of Linear Heat Detection available in the FyreLine range, each suited to a variety of applications. These include FyreLine EN54 Fixed, FyreLine Digital and FyreLine Analogue.

FyreLine EN54 Fixed Linear Heat Detection

FyreLine EN54 Fixed Linear Heat Detection provides a fixed heat detection solution that is approved to BS EN54-28:2016; the European Standard for non-resettable line-type heat detectors.

It supports two zones of up to 1000m and can be connected to either a conventional or addressable fire alarm control panel. The system’s control panel calculates the distance along the cable to the alarm point to provide an accurate location of the overheat event. 

A FyreLine EN54 Fixed Linear Heat Detection system is comprised of three key components; FyreLine EN54 Fixed LSZH LHD Cable, FyreLine EN54 Fixed Controller and FyreLine EN54 Fixed End Of Line (EOL), all of which must be used for the system to meet EN54 requirements.

FyreLine Digital Linear Heat Detection

FyreLine Digital Linear Heat Detection systems provide a cost-effective and reliable fixed temperature heat detection solution that is suited to a wide range of applications. FyreLine Fixed Heat Sensing Cable is available with rated temperatures of either 68°C, 88°C, 105°C or 185°C and can be directly connected to a single zone of a conventional fire alarm control panel or easily interfaced to an addressable loop using an addressable zone/switch monitor.

FyreLine Digital is approved by the Underwriters Laboratories (UL 521) and bears the CE mark to show that it complies with all applicable directives including the CPR, EMC and the Low Voltage Directive (LVD)  for sale within the EU.

FyreLine Analogue Linear Heat Detection

FyreLine Analogue continually monitors for changes in temperature and triggers an alarm once its user-specified temperature is reached. This also gives the user the option to set a pre-alarm temperature, providing the opportunity to investigate a potential fire before the alarm is raised.

FyreLine Analogue is also approved by the Underwriters Laboratories (UL 521) and bears the CE mark to show that it complies with all applicable directives including the CPR, EMC and the Low Voltage Directive (LVD)  for sale within the EU.