EN 54-28:2016

European foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Product characteristics
5 Testing, assessment and sampling methods
6 Assessment and Verification of Constancy of Performance (AVCP)
7 Classification and designation
8 Marking, labelling and packaging
Annex A (normative) - Mounting of the sensing element
         of NLTHD in the heat tunnel
Annex B (normative) - Heat tunnel for response temperature
         measurements
Annex C (informative) - Construction of the heat tunnel
Annex D (normative) - Test arrangement for vibration tests
        for sensing element
Annex E (normative) - Test apparatus for impact test
        on the sensing element
Annex ZA (informative) - Clauses of this European Standard
         addressing the provisions of the EU Construction
         Products Regulation
Bibliography

This European Standard applies to non-resettable line-type heat detectors consisting of a sensing element using an electrical sensor cable which can be connected to a sensor control unit or either directly or through an interface module to a control and indicating equipment intended for use in fire detection and fire alarm systems installed in and around buildings and civil engineering works (see EN 54 1:2011).The non-resettable sensing element has a fixed temperature alarm threshold and does not distinguish between short circuit and alarm condition.This European Standard specifies the requirements and performance criteria, the corresponding test methods and provides for the Assessment and Verification of Constancy of Performance (AVCP) of non-resettable line-type heat detectors to this European Standard.This European Standard also covers non-resettable line-type heat detectors intended for use in the local protection of plant and equipment.Non-resettable line-type heat detectors with special characteristics and developed for specific risks are not covered by this standard.