EN 54-12:2015

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
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) - Bench for response value measurements
Annex B (normative) - Fire test room
Annex C (normative) - Smouldering (pyrolysis) wood fire (TF2)
Annex D (normative) - Glowing smouldering cotton fire (TF3)
Annex E (normative) - Flaming plastics (polyurethane) fire (TF4)
Annex F (normative) - Flaming liquid (n-heptane) fire (TF5)
Annex G (normative) - Apparatus for stray light
Annex H (informative) - Information concerning the requirements
        for the response to slowly developing fires
Annex I (informative) - Data supplied with line detectors using
        an optical beam
Annex ZA (informative) - Clauses of this European Standard addressing
         the provisions of the EU Construction Products
         Regulation
Bibliography

This European Standard specifies requirements, test methods and performance criteria for line detectors using an optical beam that detect smoke by utilizing the attenuation and/or changes in attenuation of an optical beam, for use in fire detection and fire alarm systems installed in buildings (see EN 54 1:2011).This European Standard provides for the assessment and verification of constancy of performance (AVCP) of line detectors using an optical beam to this EN.This European Standard does not cover:-line detectors using an optical beam designed to operate with separations between opposed components of less than 1 m;-line detectors using an optical beam whose optical path length is defined or adjusted by an integral mechanical connection;-line detectors using an optical beam with special characteristics, which cannot be assessed by the test methods in this European Standard.NOTEThe term "optical" is used to describe that part of the electromagnetic spectrum produced by the transmitter to which the receiver is responsive; this is not restricted to visible wavelengths.