Signaline FT-EN Linear Heat Detection is an EN54 part 28 approved fixed temperature line-type heat detection system.
Signaline FT-EN Linear Heat Detection works by using a heat-sensitive cable that detects changes in temperature. When the cable reaches a certain temperature, the internal polymer melts triggering an alarm. The alarm location is automatically shown on the LocatorPlus-EN.
Often used where alternative forms of fire detection are not well suited, especially industrial applications where airflow, chemicals or contaminants are present.
Signaline FT-EN is a Low Smoke Zero Halogen (LSZH) linear heat detector and is available in 68°C, 78°C or 88°C alarm temperatures. All FT-EN cables can also come with option stainless steel braiding for further mechanical protection or with catenary wire for easy installation where direct mounting is not possible.
On site testing can be conducted via the Signaline FT-EOL-EN integrated test buttons.
Signaline FT-EN products
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EN54 part 28 approved linear heat detector controller with automatic alarm location
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EN54 part 28 approved linear heat detector termination box
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Stainless steel braiding for linear heat detector
Frequently asked questions
Is Linear Heat Detection approved?
Yes! Signaline FT-EN is approved to EN54 part 2 by UL EU.
It is also approved by UAE Civil Defense and is the only ActivFire-approved linear heat detector on the market.
You can download copies of all our approval certificates.
What components do I need for a Linear Heat Detection system?
Linear Heat Detector systems use a line-type heat detection cable which is monitored by a front end controller and terminated in an end of line box.
Signaline FT-EN is made up of the LocatorPlus-EN, a choice of FT-68-EN, FT-78-EN, FT-88-EN detection cable and the FT-EOL-EN unit.
There is no minimum length of cable required. Furthermore, the LocatorPlus-EN and FT-EOL-EN are capable of monitoring two zones of cable. Therefore, if site allows, you can use one LocatorPlus-EN and one FT-EOL-EN for two lengths of detection cable.
How do I test Linear Heat Detection?
Linear Heat Detection forms part of a building’s life safety equipment and therefore regular testing is essential. Functional testing can be performed by using a suitable heating element on the line-type detection cable to simulate an alarm.
For Signaline FT-EN, testing can also be performed by opening the FT-EOL-EN unit and pressing the test switch.
If live heat testing is performed, the tested section will need to be replaced.
Which clip should I use to secure Linear Heat Detection?
The correct choice of clip depends on the specific enviornment, mounting surface and local regulations in which the linear heat detection is being used.
For EN54 approved solutions the cable should always be mounted with a metal fixing clip that allows a 20mm drop from the fixing surface. This allows air-flow around the line-type heat detector and ensures quick activation in an alarm event.
Specialist clips are necessary for use in specific environments, such as floating roof tanks and cable trays.
When there is no easy mounting surface e.g. due to non-flat surfaces or apexed roofs, consider the use of a catenary wire solution.
You can review a full list of Signaline Linear Heat Detection clips.
Can I use Linear Heat Detection in the Hazardous Area?
For electrical equipment to be used within a designated Hazard Area the items should be certified safe for use. This is normally done by encapsulating the electronics inside a Flame Proof enclosure or ensuring the power consumption is below a minimum threshold to not be an ignition risk (Intrinsically Safe).
Many Linear Heat Detectors are defined as Simple Apparatus. This means, by themselves they do not have the electrical energy to be an ignition source.
Simple Apparatus can be used within the hazardous area, and this is the case for Signaline Linear Heat Detectors.
For more information please review our guide for hazardous areas
What is the minimum and maximum zone length for Linear Heat Detection?
The minimum and maximum zone length for Linear Heat Detection will depend on the approval of the line-type heat detector and the local regulation.
En54 part 22 approved systems are limited to 500m per zone and require a minimum of 50m.
En54 part 28 approved systems are limited to 1000m per zone and have no minimum length.
UL, cUL and FM approved systems are limited to 3000m per zone and have no minimum length.
What reel lengths are available?
Signaline Linear Heat Detection cable is sold in 50 metre lengths, so the minimum order is 50 metres.
We offer reels in 50-metre steps—such as 50m, 100m, 150m, and so on—up to 500 metres for FT-EN.