Linear Heat Detection Cable
Analogue and Conventional Linear Heat Detection Cable Systems
The Linear Heat Detection Cable (LHDC) System from Hochiki 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.
Extensive single zonal lengths of the specially designed 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, the alarm condition can be reset at the zonal controller.
This is particularly useful when carrying out annual maintenance utilising the proprietary one metre Test Oven.
Fully integrated into Hochiki's renowned ESP intelligent hardwired system, providing maximum flexibility.
Easy to install due to its flexibility and versatility for many environments.
Extensive single zonal lengths of the specially designed cable can trigger alarms for hot spots occurring on very small sections of the total cable.
Designed to provide early detection of fire when detecting overheating where other forms of detection are incapable.
Fire Safety in Cable Containment
A cable tray fire, however small can cause extensive interruption and damage to building structures, processes and subsequent consequential loss. Using Hochiki's Linear Heat Detection Cable system the outbreak of fire may be detected before there is any damage to property or equipment. Typically, cable tunnels, risers and flats use multi-level cable trays/ ladder racking for cable containment.
Fire Safety in Tunnels
Due to the increased air flow in tunnels, traditional smoke detectors can be prone to generating false alarms, as well as inaccuracy in fire location due to environmental contamination. The combination of Hochiki's LHDC and interfaces works effectively in this environment and provides accurate distance location within 1 metre.
Fire Safety in Car Parks
Increasingly, Linear Heat Detection Cable is being recognised as the fire protection of choice for car parks. Its unique factors mean it is ideally suited for the harsh environmental conditions that are present. Car parks are often prone to high air flows, this coupled with exhaust fumes that are generated can cause severe problems for conventional smoke detectors. Linear heat detection cable is not affected by these conditions. Similarly it is also unaffected by environments that are prone to damp and high humidity.
Fire Safety in Recycling Plants
In recent years, several recycling plants have had fires due to various external events and equipment failures. These events and failures have caused combustible waste products to be ignited with catastrophic results. Recognising this, Hochiki recommend a combination of specialist products for early detection of potential and actual fires in harsh environments. Fast, reliable detection can reduce damage to equipment and the high cost of repair or replacement, minimise down time and consequential loss and lessen the impact for potential pollution and the possible inhalation of toxic fumes.
Fire Safety in Food Processing
Food products being transported at high temperatures have the potential risk of fire and can cause disruption to the food handling process. This can be costly in loss of product, down time and damage to machinery. A mechanical fault can cause a build up in heat which can be sufficient to ignite a part of the machinery. A Grain Dryer for example, is one application where a build up of husk can ignite, causing a fire and loss of product. Linear Heat Detection Cable (LHDC) is the obvious choice to provide early detection of fire conditions and overheating.
Fire Safety for Conveyor Systems
Conveyor Systems in general have a fire risk due to external events and equipment failure. However the flammable nature of products including the ability of some types to self ignite introduces an exceptional hazard requiring special consideration. Being a sealed ‘Cable/Wire' the LHDC is not prone to the water and dust problems that cause conventional smoke/heat/beam detectors to be ineffective in the rigorous environment of a conveyor housing/enclosure.
The LHDC system is adaptable to a broad range of environments and applications where conventional fire detection methods cannot be utilised.
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