LHD is a try and tested in heat detection that provides temperature monitoring at the precise point of risk. The system is reliable, flexible and can be set up to cover kilometers in range.
Linear Heat Detection (LHD)
The Economical Solution for Large Scale Protection
HOW IT WORKS?
The way in which LHD detects fire incidents depends on the type of LHD cable used. Digital LHD cables detect heat using heat sensitive insulation in its cables. During a fire incident, this heat sensitive insulation will melt and trigger a short circuit which provides a fire alarm signal.
Analogue LHD cables on the other hand work by using detection cables that are heat sensitive and changes in resistance when temperature rises. During a fire incident, the detection cables will experience a shift in resistance in response to the rising temperature. When such abnormal changes in resistance is detected, a fire alarm signal will be sent by the LHD system.
Features
Easy to Maintain
LHD systems can be easily maintained as any damaged cables can very simply be replaced with new cables using conventional tools (Pliers, cable connectors, etc)
Customizable
LHD cable sheaths come in a wide range of materials to accommodate the use of LHD in various environments. I.e. Nylon for chemical resistance, and bronze for mechanical resistance.
Wide Coverage
LHD cables comes in 100-500m drums and can be used to cover up to several kilometres in length.
Robust & Durable
LHD systems can be used in a plethora of harsh environments such as outdoors, high temperature environments, and even environments posing risk of mechanical damage; all while maintaining a service life of around 30 years.
Applications
LHD is most commonly used in large scale and challenging environments where cost and ease of maintenance is of concern: