What is analogue linear heat detection and where is it used?
Analogue linear heat detection systems comprise of a control or interface unit, a zone of a four core analogue linear heat detection cable and an end of line unit. The system identifies fires or overheat conditions by continuously measuring changes in electrical resistance along the detection cable. An alarm is triggered once the resistance along the cable falls below a set threshold, which is determined by the desired alarm temperature (chosen by the user).
For ProReact Analogue Linear Heat Detection systems, users can also select a pre-alarm option if they would like an early indication of rising temperature. ProReact Analogue Linear Heat Detection systems can also be reset following a fire or overheat, rather than being replaced, providing the detection cable is not exposed to a temperature above 125⁰C.
Analogue linear heat detection cable is available with a broad array of outer material coatings that allow it to be used in many different environments. Popular applications include car parks, control or data rooms, warehousing and manufacturing plants.
Benefits of using analogue linear heat detection
- No need to replace the linear heat detection system following a fire or overheat (providing the cable is not exposed to a temperature above 125⁰C)
- No pre-determined alarm temperature for a given length of detection cable. Users can select a desired alarm temperature from a choice on the control unit
- Maximum cable length per zone of 500 metres
- Pre-alarm functionality gives users early indication of rising temperature
