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Contents
1 Introduction to Intrinsic Safety ............................................................................................................ 3
2 Range of Products ............................................................................................................................... 5
3 Features of Orbis IS ............................................................................................................................. 5
4 Choosing a Detector: Q & A ................................................................................................................. 6
5 Orbis IS Optical Smoke Detector.......................................................................................................... 9
5.1 Where to use optical smoke detectors.......................................................................................... 9
5.2 How does the Orbis IS optical detector work ................................................................................ 9
5.3 Enviornmental Performance: .......................................................................................................10
5.4 Classification ...............................................................................................................................10
5.5 Technical Data: ............................................................................................................................10
6 Orbis IS Multisensor Smoke Detector .................................................................................................11
6.1 Where to use optical smoke detectors.........................................................................................11
6.2 How does the Orbis IS multisensor smoke detector work? ...........................................................11
6.3 Enviornmental Performance: .......................................................................................................11
6.4 Technical Data: ............................................................................................................................12
7 Orbis IS Heat Detector ........................................................................................................................13
7.1 Where to use heat detectors: ......................................................................................................13
7.2 Choosing the correct class of heat detector? ...............................................................................13
7.3 How does Orbis IS heat detectors work?......................................................................................13
7.4 Environmental Performance: .......................................................................................................14
7.5 Technical Data: ............................................................................................................................14
8 Orbis IS Base .......................................................................................................................................15
8.1 Installing Orbis IS: ........................................................................................................................15
8.2 Fitting Orbis detector heads: .......................................................................................................17
8.3 Orbis LED Status Indication ..........................................................................................................17
9 Orbis IS Adaptor .................................................................................................................................18
10 System Design ....................................................................................................................................18
10.1 Types of safety barrier .................................................................................................................18
10.2 Approved safety barriers .............................................................................................................19
10.3 Safety earth .................................................................................................................................20
11 Wiring and cable types .......................................................................................................................21
12 Maximum loading of IS circuit ............................................................................................................23
13 Installation .........................................................................................................................................23
14 Remote LED connection .....................................................................................................................23
15 MiniDisc Remote Indicator .................................................................................................................23
16 Servicing .............................................................................................................................................24
17 Achnowledgement .............................................................................................................................24