Oldham OLC 20, Руководство пользователя, Страница: 3 / 32

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CONTENTS
1 Description ................................................................................................... 5
1.1 General .......................................................................................................................... 5
1.2 Main characteristics of the various versions ................................................................. 5
1.3 Mechanical installation of the various versions ............................................................ 6
2 Wiring arrangements .................................................................................. 7
2.1 3-Wire version (OLC 20d, OLCT 20d) ........................................................................ 7
2.2 2-wire versions (OLCT 20d) ......................................................................................... 7
2.3 2-wire Intrinsic Safety versions (OLCT 20i) ................................................................ 8
3 Maintenance ................................................................................................. 9
3.1 Detector OLC 20 ........................................................................................................... 9
3.1.1 Calibration ............................................................................................................... 9
3.1.2 Replacing a sensor on an OLC 20 ......................................................................... 10
3.2 Transmitters OLCT 20 ................................................................................................ 10
3.2.1 Calibration ............................................................................................................. 10
3.2.2 Calibration specifications ...................................................................................... 12
3.3 Replacing a sensor on OLCT 20 ................................................................................. 12
3.4 Disposal of OLC(T) 20 ............................................................................................... 12
4 Spare Parts ................................................................................................. 13
4.1 OLC 20 flameproof gas detector ................................................................................ 13
4.2 OLCT 20 flameproof gas detector .............................................................................. 13
4.3 OLCT 20 Intrinsic Safety detector .............................................................................. 14
5 Accessories ................................................................................................. 15
6 Technical characteristics of OLC 20 ....................................................... 17
7 Technical characteristics of OLCT 20..................................................... 17
8 Specific Instructions for use in Explosive Atmospheres according to
European Directive ATEX 94/9/EC ........................................................ 19
8.1 Specifications for mechanical and electrical installation in Classified Areas. ........... 19
8.1.1 Flameproof detectors (d) ....................................................................................... 19
8.1.2 Intrinsic safety detectors (i) OLCT 20 i ................................................................ 19