Linear heat detection (LHD) is a fire detection technology that utilizes a specialized cable to detect and locate heat along its entire length.
Unlike traditional point detectors, which sense heat in a specific area, linear heat detection cables can cover long distances and provide continuous monitoring.
The cable consists of heat-sensitive elements that trigger an alarm when a certain temperature threshold is reached or when a rate-of-rise in temperature is detected.
This allows for early detection of fire or overheating conditions, making linear heat detection particularly useful in environments where rapid fire detection is crucial, such as tunnels, conveyor belts, cable trays, and storage areas.
It offers flexibility in installation and can be tailored to fit various applications, providing reliable and effective fire detection solutions.
It can detect a fire anywhere along the length of the cable, and can be of lengths in excess of a kilometer.
Linear heat detection is also sometimes know as Heat Sensing Cable, Line Type Heat Detector or Linear Heat Sensing cable.
Non-Resetable Line Type Heat Detector
This term refers to linear heat detectors that can not be ‘reset’ (i.e reused) after an alarm event. Instead the affected area must be replaced. Other terms for Non-resetable line type heat detectors are Digital or Fixed temperature.
Signaline has two forms of Non-resetable line type heat detectors. For European markets we offer the Signaline FT-EN which is approved to EN54 part 28. For global markets we offer the Signaline FT range which is approved to UL and FM.
Resetable Line Type Heat detector
This term refers to linear heat detectors that can be ‘reset’ (i.e reused) after an alarm event. Other terms for Non-resetable line type heat detectors are analogue linear heat detectors.
The Signaline HD range is our Resetable line type heat detector