Ampac FIRERAY 100R Product Manual Download Page 21 | Manualshive

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FIRERAY

PRODUCT GUIDE

Page 17

5.2

Reflections and Obscuration

Reflective objects too near the line of sight can reflect the infrared light beam from the Transmitter.

There must be a permanent clear line of sight between the Transmitter and the Receiver / Reflector.

If this occurs, the whole area may not be protected or movement of these reflective objects can
cause false alarms.

Any object in the infrared light beam path could cause a reduction in signal and ultimately may
prevent the system from operating correctly

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Summary of Contents for FIRERAY 100R

Page 1: ... A AS S S7 7 72 2 24 4 40 0 0 1 1 12 2 2 E E EN N N5 5 54 4 4 1 1 12 2 2 a a an n nd d d U U UL L L2 2 26 6 68 8 8 O O Op p pt t ti i ic c ca a al l l B B Be e ea a am m m D D De e et t te e ec c ct t to o or r rs s s Product Guide Our aim is to provide Consistently Excellent Service in the eyes of our customers ...

Page 2: ......

Page 3: ...acing 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 Inte...

Page 4: ...8 FIRERAY Optical Beam Smoke Detectors 22 8 1 Approvals 22 8 2 FIRERAY Projected Range 23 8 2 1 FIRERAY 2000 23 8 2 2 Accessories 23 8 3 FIRERAY Reflected Range 24 8 3 1 FIRERAY 50R 100R 24 8 3 2 Accessories 24 8 4 FIRERAY Reflected and Motorised Range 26 8 4 1 FIRERAY 5000 26 8 4 2 Accessories 27 9 Definitions 30 ...

Page 5: ... a well engineered Fire Alarm Control Panel Thanks to their own capabilities Optical Beam Smoke Detectors can overcome the problems and limitations of point type smoke detectors Optical Beam Smoke Detectors are an efficient and economical way of protecting lives equipment and property where Areas are wide Ceilings are high Architecture cosmetic aesthetic is important Cost of installation and servi...

Page 6: ... Control Unit which can be a separate or integrated unit depending on the type of Optical Beam Smoke Detector analyses the signal information and communicates with the Fire Alarm Control Panel FACP on the status of the Optical Beam Smoke Detector Core The effective region corresponds to the Core area which will connect the Transmitter with the Receiver Reflector The Core region contains sufficient...

Page 7: ...e Optical Beam Smoke Detector will see this a fault condition not as an alarm The threshold is typically set by the manufacturer at a specified sensitivity level This minimises the possibility of unwanted alarm due to the blockage of the beam by a solid object such as a sign or a ladder being inadvertently placed in the beam path Very small slow changes in the obscuration of the light source are a...

Page 8: ...up to 100 metres apart The Receiver is electrically connected to the Control Unit the later being installed at the ground level 2 3 2 Reflected The Transmitter and the Receiver are contained within one unit The Transceiver The transmitted infrared light beam is reflected back by a reflector prism mounted directly opposite this unit up to 100 metres away The Receiver is connected to a Control Unit ...

Page 9: ...educed costs power and wiring are only required at the transceiver end and only requires the Transceiver to be aligned However the Reflected Optical Beam Smoke Detector can be vulnerable to reflective items close to IR beam path As the Reflector has a wide acceptance angle it does not need to be aligned as accurately as both ends of a Projected Optical Beam Smoke Detectors 2 3 4 New Optical Beam S...

Page 10: ...s of common applications Atriums Conference Exhibition Centres Shopping Malls Historic Buildings Churches Mosques Museums Hangers Manufacturing Plants Warehouses Airports Stables Sport Leisure Centres 3 2 Special Applications Like point type detectors Optical Beam Smoke Detectors are inappropriate for outdoor applications Outdoor conditions make smoke behaviour impossible to predict Environmental ...

Page 11: ...e of the infrared light beam axis is 7 5 metres for satisfactory detection under flat ceilings see section 4 3 Location Spacing and Positioning for distances to be considered in some general applications Optical Beam Smoke Detectors are ideally suited for high ceiling applications where their infrared light beam path is less likely to be obstructed High Ceiling applications such as atriums lobbies...

Page 12: ... layer and into the smoke layer However if there are objects below the ceiling that could obscure the beam path the detector heads Reflector positioning may need to be adjusted This can be determined by smoke tests The effects of stratification should also be considered when locating Optical Beam Smoke Detectors see 4 4 3 Stratification Note There are several models for positioning Optical Beam Sm...

Page 13: ...al coverage can be increased from 7 5m either side of the infrared light beam axis to X 7 5 7 5 x 20 100 metres X 7 5 1 5 metres X 9 metres The lateral coverage can be increased to 9 metres either side of the infrared light beam axis This only applies for Optical Beam Smoke Detectors positioned in the APEX For all Optical Beam Smoke Detectors the calculations remain the same Pitch angles up to and...

Page 14: ...am Smoke Detector the reflected infrared light beam from the Reflector will be returned to the Receiver in the normal way The purpose of this approach is to detect the rising plume rather than the smoke layer For this approach supplementary detection using Optical Beam Smoke Detectors close enough to each other to assure intersection of the plume is installed at a level below the lowest expected s...

Page 15: ...plications 4 4 2 Hostile Enviroment Optical Beam Smoke Detectors are not as limited as point type detectors to hostile environments temperature extremes dirt and corrosive gases and such In addition flame explosion proof Optical Beam Smoke Detector have been designed for protection of large hazardous with potentially explosive atmospheres areas such as Refineries Mills Munitions Factories and Stor...

Page 16: ...on that includes the following Structural features Size and shape of the room and bays Occupancy and uses of the area Ceiling height and shape Surface and obstructions Ventilation Ambient environment Burning characteristics of the combustible materials present Configuration of the contents in the area protected The results of an engineering evaluation may require an installation at a reduced heigh...

Page 17: ...ct the development of a smoke layer at whatever temperature condition exists One or more Optical Beam Smoke Detectors are located at the ceiling Additional Optical Beam Smoke Detectors are located at other levels lower in the volume The exact positioning of the Optical Beam Smoke Detectors is a function of the specific design but should include Optical Beam Smoke Detectors at the bottom of any ide...

Page 18: ...efore less likely smoke will be blown out of the Optical Beam Smoke Detector s sensing range 4 5 2 Coverage Spacing Point Type Detector Radius 7 5 metres Distance between detectors 10 metres Qty required to cover 1500m 15 units minimum Optical Beam Smoke Detector Lateral coverage 7 5 metres either side Distance between detectors 15 metres Qty required to cover 1500m 1 unit 4 5 3 Installation Maint...

Page 19: ...le they can be added to any intelligent system irrespective of the communication protocol between the Control Panel and Detectors 4 6 2 Conventional Optical Beam Smoke Detector on an Addressable FACP Using a Loop Driven Zone Interface Device allows the Conventional Optical Beam Smoke Detector to be placed on Addressable FACP Addressable Fire Panel Conventional Beam Smoke Detector Power Supply Unit...

Page 20: ...alarm or nuisance signals In cases where only one stable mounting surface as defined above can be used and Reflected Optical Beam Smoke Detector has been chosen the Transceiver should be mounted to the stable surface and the Reflector should be mounted to the less stable surface The Reflector has a much greater tolerance for the unstable mounting locations defined above DO NOT MOUNT the Optical Be...

Page 21: ...smitter There must be a permanent clear line of sight between the Transmitter and the Receiver Reflector If this occurs the whole area may not be protected or movement of these reflective objects can cause false alarms Any object in the infrared light beam path could cause a reduction in signal and ultimately may prevent the system from operating correctly ...

Page 22: ...ensitivity 5 5 Sunlight Artificial Lights Light sources of extreme intensity such as sunlight and artificial lamps if directed to the Receiver can cause a dramatic signal change resulting in fault and alarm signals Pointing the Receiver to the rising or setting sun should be avoided If possible the exposure should be North South If the sunlight cannot be avoided the Receiver should be mounted slig...

Page 23: ... indicator and closing the fire relay Once the environment is back to satisfactory level and if the Optical Beam Smoke Detector is not latched the device will automatically return in the condition prior to the fire within a defined time If the Optical Beam Smoke Detector is latched The device will have to be reset manually 5 7 2 Fault Test The Receiver optics for the Projected type Optical Beam Sm...

Page 24: ...to establish that the system operates correctly and in accordance with the recommendations of the locally used standards and codes The Commissioning of Optical Beam Smoke Detectors need to encompass at least the following checks Have the Optical Beam Smoke Detectors been installed suitably structurally electrically Are the Optical Beam Smoke Detectors aligned adequately no obstructions reflections...

Page 25: ...ed at the beginning of the maintenance activities that it has been completed and the whole system is operational again Routine checks should consist of Visual inspection of all devices for physical damages and any other condition that might impair proper operation The installation remains mechanically fixture and electrically wiring optimal No major changes to the environment the line of sight is ...

Page 26: ...ries that have been specially engineered to suit specific applications and variation of standards and code requirements Note Product Data Sheets are available for the above products listing complete specifications Projected FIRERAY 2000 range PDS220 0004 Reflected FIRERAY 50R 100R range PDS220 0005 Reflected and Motorised FIRERAY 5000 PDS220 0008 8 1 Approvals All FIRERAY Optical Beam Smoke Detect...

Page 27: ...ally demanding applications historic buildings museums and environments prone to reflections 8 2 2 Accessories The following accessories can be supplied with FIRERAY 2000 Obscuration Test Filter To perform a sensitivity test of 25 to 100 obscuration Alignment Tool To assist in the alignment of the Receiver at the installed location This allows one person to set up test and maintain the FIRERAY 200...

Page 28: ...metres in length using one Reflector The FIRERAY 100R covers an area beyond 50 metres and up to 100 metres using 4 Reflectors 8 3 2 Accessories The following accessories can be supplied with FIRERAY 2000 LLT Remote Test Station Allows testing of the Optical Beam Smoke Detector from ground level The device is compatible with both the FIRERAY 50R and 100R Data Link Cable A pre wired 2 conductor cabl...

Page 29: ... and Reflector it can be mounted horizontally or vertically and generate angles up to 45 degrees Surface Mount Back Box Includes 2 x 3 4 conduit knockouts on each side and termination block Protective Cage To protect the FIRERAY 50R 100R from damage leading to misalignment and fault alarms ...

Page 30: ...ke Detector LASER assisted Alignment once the Detector Head is connected an integral LASER can be activated This allows the Reflector to be sighted quickly and with confidence Auto Beam Alignment once the LASER has been used to coarsely align the IR beam the Auto Beam Alignment process takes over and thanks to the built in motor automatically steers the IR beam into the optimum position Multi Dete...

Page 31: ...se when the installation is between 50 and 100 metres form Detector Head Universal Mounting Bracket Bracket pivots for accurate alignment of FIRERAY 5000 or Reflector Single Reflector Alignment Adaptor Comes pre drilled to mount one Reflector Designed to mount on the Universal Mounting Bracket 4 Reflectors Alignment Adaptor Comes pre drilled to mount 4 Reflectors Designed to mount on the Universal...

Page 32: ...t knock outs on top and bottom Surface or Flush mount Will mount to single gang double gang or 4 square box System Controller Semi Flush Trim Plate Mounts on the System Controller Back Box for semi flush installation Detector Head Back Box Back box includes knock outs on all four sides Will mount over single gang double gang or 4 square box Detector Head Cover Plate Use with Detector Head Back Box...

Page 33: ...s pre drilled to mount the Detector Head Supplied with 1 2 long nipple Can be used for single or bi directional applications Includes 2 mounting plates and one blank cover Protective cage To protect the FIRERAY 5000 from damage leading to misalignment and false alarms ...

Page 34: ... transmitted between a light source and a photosensitive receiver When smoke particles enter the infrared light beam path some light is scattered and some absorbed thereby reducing the light reaching the Receiver If this obscuration exceeds a set value the Optical Beam Smoke Detector responds and communicates its status to a Fire Panel Optical Beam Smoke Detector Coverage The area in which an Opti...

Page 35: ...ich can be used to test the proper sensitivity threshold of an Optical Beam Smoke Detector Fault Condition The status of a device or system that impair its proper operation i e open circuit on an initiation loop The notification of a Fault condition indicated on a control panel or annunciator is a FAULT signal ...

Page 36: ...er England DN3 3GW Tel 44 0 1302 833 522 Fax 44 0 1302 835 021 Email info eu ampac net NEW ZEALAND AMPAC PACIFIC LTD Unit 4 101 Diana Drive Glenfield Auckland New Zealand Tel 64 9 443 8072 Fax 64 9 443 8073 Email info nz ampac net UNCONTROLLED DOCUMENT NOTE Due to AMPAC s commitment to continuous improvement specifications may change without notice HEAD OFFICE Assessed to ISO9001 LPCB ref no 952 A...

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