Ampac FIRERAY 2000 - Default Chapter; Table of Contents

FIRERAY PRODUCT GUIDE
TABLE OF CONTENTS Page No.
1
About This Manual.................................................................................................................... 1
1.1 Introduction ....................................................................................................................1
1.2 References..................................................................................................................... 1
1.3 Symbols .........................................................................................................................1
2 What is an Optical Beam Smoke Detector ............................................................................. 2
2.1 Definition ........................................................................................................................ 2
2.2 Operation Principles....................................................................................................... 3
2.3 Optical Beam Smoke Detector Types............................................................................ 4
2.3.1 Projected............................................................................................................ 4
2.3.2 Reflected............................................................................................................ 4
2.3.3 Application of Projected and Reflected Optical Beam Smoke Detectors.......... 5
2.3.4 New Optical Beam Smoke Detector Technology .............................................. 5
3 Where is an Optical Beam Smoke Detector Used ................................................................. 6
3.1 Traditional Applications.................................................................................................. 6
3.2 Special Applications....................................................................................................... 6
4 Specify an Optical Beam Smoke Detector ............................................................................. 7
4.1 Standards.......................................................................................................................7
4.2 Coverage / Ceiling Height .............................................................................................. 7
4.3 Location, Spacing and Positioning................................................................................. 7
4.3.1 Flat Ceiling......................................................................................................... 8
4.3.2 Apex Ceiling – Shed Type ................................................................................. 8
4.3.3 Apex Ceiling – Peaked Type ............................................................................. 9
4.3.4 Atrium .............................................................................................................. 10
4.4 Capability to Critical Enviroments ................................................................................ 11
4.4.1 High Air Velocity .............................................................................................. 11
4.4.2 Hostile Enviroment .......................................................................................... 11
4.4.3 Stratification ..................................................................................................... 12
4.5 Comparison with Point Type Detectors ....................................................................... 14
4.5.1 High Air Velocity .............................................................................................. 14
4.5.2 Coverage / Spacing ......................................................................................... 14
4.5.3 Installation / Maintenance in Wide Area’s ....................................................... 14
4.6 Interface to a Fire Alarm Control Panel ....................................................................... 15
4.6.1 Conventional Optical Beam Smoke Detector .................................................. 15
4.6.2 Conventional Optical Beam Smoke Detector on an Addressable FACP ........ 15
5 Install an Optical Beam Smoke Detector ............................................................................. 16
5.1 Structure.......................................................................................................................16
5.2 Reflections and Obscuration........................................................................................ 17
5.3 Optical Cross Talk........................................................................................................ 18
5.4 Sensitivity .....................................................................................................................18
5.5 Sunlight / Artificial Lights.............................................................................................. 18
5.6 Heat Sources ............................................................................................................... 18
5.7 Testing Procedures...................................................................................................... 19
5.7.1 Smoke Test...................................................................................................... 19
5.7.2 Fault Test......................................................................................................... 19