The Linear Heat Detector is a heat-sensitive cable that detects heat anywhere along its length. The sensor cable is comprised of two steel conductors individually insulated with a heat-sensitive polymer. The insulated conductors are twisted together to impose a spring pressure between them, then wrapped with a protective tape and finished with an outer jacket suitable for the environment in which the detector will be installed.
The Linear Heat Detector is a fixed temperature digital sensor and is therefore capable of initiating an alarm once its rated activation temperature is reached. At the rated temperature, the heat-sensitive polymer insulation yields to the pressure between conductors, permitting them to move into contact with each other, thereby initiating an alarm signal.
It is not required that a specific length be heated in order to initiate an alarm, nor is system calibration necessary to compensate for changes in the installed ambient temperature. The Linear Heat Detector provides the advantages of line coverage with point sensitivity.
The current product range consists of 5 distinct types of cable. Each designation identifies a specific model type and outer jacket material which has unique characteristics that have been selected to accommodate the widest range of installation environments.
Click here to view more information: LHD Information.
