The ever increasing diversity of applications for Proline FM approved and UL listed type TH linear sensor cable which also meets current NFPA72  and conforms 100% with the proposed EN54-28 standards acknowledges the many advantages that Proline …as a combined cable and continuous temperature detector which may be located at the exact point of risk and signal a pre combustion alarm condition …offers. Within this category is of course ceiling /floor voids, ducting systems, tunnels etc.  Providing there is a clear air flow around the Proline linear sensor cable at areas other than at its approximate 1.0 metre spacing fixing /support locations, the sensor cable will monitor the temperature of that local air  and provide an alarm signal should the sensor cable 68C/155F or 88C/190F or 105C/221F alarm temperature rating be achieved or exceeded (depending which is specified) ……regardless of a 1.0mm or 1.0 kms exposure the alarm temperature is the same! Where the sensor cable is in direct physical contact with a solid surface, it will then monitor the temperature of that surface for an alarm ….not the surrounding air temperature!  Within single areas experiencing multiple ambient (non alarm) temperatures….such as where steam pipes or halogen lighting exist…sensitivity can be maintained within the total area by “series” jointing different alarm temperature rated TH sensor cables in a single run of up to 3,000 metres! For particularly corrosive or abrasive environments , RILSAN extruded sensor option is available. A Stainless Steel braid is also available but in more than 10 years, this has only ever been installed on ONE site……an Oil exploration /drilling rig where “pig launcher” and “slug catcher” applications presented excessive increased risk of mechanical damage. In all other “risk” areas (coal conveyors, escalators, elevators etc) the much more economical RILSAN extrusion provided more than adequate mechanical protection. PROLINE can be easily integrated with ANY customer conventional or addressable alarm control system with or without use of a Proline supplied ZI interface unit.   For full product details, application examples and pricing please visit the Company website ….. or email Proline on  


Digital (LHS) & Analogue Linear Sensing

The means to locally monitor for temperature changes (rise or fall) at "point of risk" and at ANY /ALL locations along an installed length of temperature sensitive cable - regardless of environmental conditions.

Fibre Optic Linear Temperature Sensing

Line detection of temperature change and rate of rise along multi -kms lengths of small diameter fibre optic cable. It provides high performance near real time temperature Sensing and Alarm functionality with standard communication interfaces.

Proline 'Nero' Water & Moisture Detection

Rapid detection of the smallest of leaks within Industrial, Commercial Environments by a recoverable cable. Designed to provide 24 hours/day x 7 days/week continuous monitoring of areas where even the smallest of leaks can prove disastrous. Essential where undetected leakages can cause serious damage to today’s complex electrical, communications and computer networks.



A U.K. registered Company with hands-on product development, global market & application experience dating from the 1970's.

Proline equipment conforms to all NFPA 72 and EN54 standards requirements for linear detection.

Pneumatic, Digital, Analogue, Fibre Optics, Measuring Point System, Aspirating Systems...regardless of your linear detection requirement PROLINE will be happy to assist you.