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VIII. TECHNICAL CHARACTERISTICS OF OLC20 and OLC20D.............................23

1. Electric power supply....................................................................................................23

2. MISCELLANEOUS......................................................................................................23

IX. Technical characteristics of OLCT20/20D and OLCT40/40D..................................24

1. Electric power supply....................................................................................................24

2. Output signal.................................................................................................................24

3. MISCELLANEOUS......................................................................................................25

X. Special Specifications for use in Potentially Explosive Atmospheres in

accordance with European Directive ATEX 94/9/EC. ...............................................26

1. Specifications for mechanical and electrical installation in Classified Areas...............26

1.1. Explosion-proof detectors (d): OLC/OLCT 20 d and enlarged safety (e)

and explosion-proof (d) : OLC/OLCT40 d..........................................................26

1.2. Explosion-proof detector (d) version HT High Temperature ...............................26

1.3. Intrinsic safety detectors (i) OLCT20 i and OLCT40 i........................................27

2. Metrological specifications for explosive gas and oxygen measurement detectors......27

2.1. Technical Specifications and Special Instructions for explosive gas detectors....28

2.2. Technical Specifications and Special Instructions for Oxygen detectors.............31

3. MARKINGS..................................................................................................................32

3.1. Explosion-proof safety version : OLC20d and OLCT20 d...................................32

3.2. Explosion-proof safety version: OLC20d High temperature HT .........................32

3.3. Intrinsic safety version: OLCT20 i......................................................................32

3.4. Explosion-proof and enlarged safety version : OLC 40 d/OLCT40d...................33

3.5. Intrinsic safety version: OLCT40 i.......................................................................33

XI. APPENDICES...................................................................................................................36

ISC/Oldham OLC20 Series User Manual

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