Continuous coverage
No gaps between devices, so the whole run is protected equally.
detection
Linear Heat Detection Systems
Make the cable the detector — continuous heat sensing along conveyors, cable trays, tunnels and cold stores, where spot devices cannot reach.
Overview
What Is Linear Heat Detection?
Some of the places most likely to start a fire are the places you cannot sensibly mount a detector. A conveyor runs for hundreds of metres. A cable tray threads through voids and risers. A tunnel has no usable ceiling and a constant draught through it.
Linear heat detection makes the cable itself the sensor. It is run along the asset being protected, and every metre of its length is sensing. A hot spot anywhere on the run triggers the system, so coverage follows the risk exactly instead of approximating it with devices at intervals.
- Every metre senses There are no gaps between devices, because there are no devices — only the run.
- Follows the asset Clipped above a conveyor, laid in a tray or fixed along a tunnel soffit.
- Fixed temperature or locating Digital types trigger at a rating; analogue and fibre types report roughly where.
- Built for hostile places Dust, wash-down, vibration and wide temperature swings are normal service conditions.
Operation
How Linear Heat Detection Works
01
Run the cable
Detection cable is installed along the asset, following the actual risk.
02
Sense along the length
Heat anywhere on the run changes the cable's electrical or optical behaviour.
03
Locate where possible
Analogue and fibre systems report the approximate distance to the hot spot.
04
Alarm and response
The controller signals the fire alarm panel and can stop the conveyor or plant.
Benefits
Why Choose Linear Heat Detection?
Detects at the source
A seized roller or overheating cable is found where it fails, not when smoke travels.
Locating versions
Analogue and fibre types report where the heat is, so you are not walking the full run.
Survives the environment
Dust, wash-down, vibration and temperature swings are normal duty.
Nothing to clean or re-aim
No optical chamber and no alignment to maintain once installed.
Stops the plant
Interfaces to the fire panel, conveyor stop and process shutdown.
Applications
Applications Across Critical Environments
Linear heat detection is specified where the risk runs along something long and awkward, and spot detection would either miss it or be impossible to maintain.
Conveyors and material handling
Belt runs where a seized roller is the usual ignition source.
Industry detailCable tunnels and trays
Cable runs in voids and risers where fire spreads along the route.
Industry detailCold stores and racking
Low temperatures and in-rack runs that defeat point detection.
Industry detailCar parks and loading decks
Large, open, draughty structures with vehicles present.
Industry detailProcess pipe racks
Outdoor runs where smoke disperses before anything detects it.
Industry detailTunnels and service routes
Long, inaccessible structures with constant airflow.
Industry detailAlso used on escalators, transformer bays and baggage handling. Whether a fixed-temperature or a locating system is right depends on the length of the run and how costly it is to search it, which the site assessment establishes.
Configuration
Inside a Linear Heat Detection System
- Detection cable digital fixed-temperature, or analogue and fibre types that report location.
- Controller or interface unit which monitors the run and reports alarm and fault conditions.
- Mounting hardware clips, messenger wire and fixings chosen for the asset and the environment.
- End-of-line and zoning so a long run can be divided into reportable sections.
- Fire alarm panel interface plus conveyor stop and plant shutdown interlocks where required.
- Design, commissioning and maintenance including route survey and functional testing at handover.
Products
Products We Supply
The linear heat detection range we are an authorised partner for.
Our services
End-to-End Linear Heat Detection Solutions
- Site assessment and risk review walking the actual space before anything is specified.
- System selection and application engineering matching the technology to the environment and the risk.
- Route survey and cable routing design so the coverage you pay for is the coverage you get.
- Integration with existing fire alarm systems including the cause-and-effect for any linked response.
- Installation, testing and commissioning with the installed system proven on handover.
- Preventive maintenance and technical support under AMC, with a documented service record.
Compliance
System Integration and Compliance
Standards and approvals
This forms part of the building's fire protection installation, interfaced to the fire alarm control panel and to any linked response the project design calls for.
In India the installation sits within IS 2189 and Part 4 of the National Building Code (NBC 2016), and the completed system forms part of what your state fire service assesses for the fire NOC.
We confirm product approvals against the certification held by the specific model proposed, and against your consultant's specification and local statutory requirements.
FAQ
Frequently Asked Questions
What facility and project teams usually ask about linear heat detection.
Still have a question?
Speak directly with one of our fire safety engineers.
Call +91 88795 33000What is linear heat detection?
A detection cable run along the asset being protected. The cable itself senses heat along its entire length, so there are no gaps between devices.
How is it different from a heat detector?
A heat detector protects the area around one point. Linear cable protects everything it is run along, which is why it suits conveyors, trays and tunnels.
Digital or analogue — which do I need?
Digital triggers at a fixed rating and tells you the circuit is in alarm. Analogue and fibre types measure along the length and report roughly where, which matters on a long run.
Will dust and wash-down affect it?
No. There is no optical chamber to contaminate, which is the main reason it is chosen for dirty and wet environments.
Can it stop the conveyor automatically?
Yes. The controller is commonly interlocked to conveyor stop and plant shutdown, which we commission and prove as one sequence.
How is it tested?
By applying heat at a test point and confirming the alarm and any interlocked response. Testing is scheduled under AMC along with cable inspection.
What do you need to quote a project?
The length and route of the run, the environment it passes through, the temperature rating required, and whether it is a new installation or an upgrade.
Engineered to your hazard class
Protect Conveyors, Trays and Tunnels with Linear Heat Detection
Talk to our team about a linear heat detection solution routed to your asset and your operating environment.