<span>ProReact</span>  Analogue Linear Heat Detection icon

ProReact Analogue Linear Heat Detection

Four core, resettable line type heat detection

Sophisticated linear heat detection

Analogue linear heat detection operates differently to digital linear heat detection in that it can identify a fire or overheat condition and trigger an alarm before the detection cable is damaged thus potentially saving time and money. It also provides greater flexibility to the end user as there is no pre-determined alarm temperature for a length of detection cable. Instead, users can select the desired alarm temperature from a choice of available temperatures on the accompanying control unit during installation.

These strengths of the technology have helped it become widely recognised and used in all corners of the world. Use Thermocable’s ProReact range of analogue linear heat detection products if you are looking for UL approved systems manufactured in line with ISO 9001:2015 quality management standards.

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

ProReact Analogue Linear Heat Detection product range

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ProReact Analogue Linear Heat Detection

  • UL approved
  • Various material coatings available
  • Two control units available
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ProReact EN Analogue Linear Heat Detection

  • UL, EN54, VdS and CNBOP approved
  • Various material coatings available
  • One control unit available with Modus compatibility
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Frequently asked questions about Analogue Linear Heat Detection

How does analogue linear heat detection work?

Analogue linear heat detection systems identify 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.

Can analogue linear heat detection cable be connected directly into a conventional fire panel or an addressable loop?

No, a control or interface unit must sit between the analogue linear heat detection cable and a fire panel or addressable loop.

Do the control units require power?

Yes, all Thermocable’s control or interface units require a 24V power supply.

How many alarm temperatures can I choose from when installing a ProReact Analogue or ProReact EN Analogue system?

Please find the range of settings below per system:

ProReact Analogue = 54⁰C, 64⁰C, 72⁰C, 79⁰C, 86⁰C, 100⁰C

ProReact EN Analogue = Class A1I / A2I (VdS approved), Class BI (VdS approved), 54⁰C, 64⁰C, 72⁰C, 79⁰C, 86⁰C, 100⁰C

(Other Pre-Alarm temperatures also available).

How do I choose an alarm temperature setting for a given installation?

In order to minimise false alarms and ensure your ProReact Analogue LHD system responds as expected, it is very important to make sure that the chosen control unit setting for selecting the alarm temperature is suitable for use given the typical and maximum application temperatures that are likely to be expected during normal operation in the installed environment.

Please refer to the installation manual for further information on typical and maximum application temperatures.

What is the minimum ambient operating temperature of the ProReact Analogue or ProReact EN Analogue systems?

Thermocable’s analogue linear heat detection cable and end of line units can continuously operate in temperatures as low as -40⁰C. The control or interface units typically have a minimum ambient operating temperature of 0⁰C.

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