AO2000 CONTINUOUS GAS ANALYZERS  |  OI/AO2000-EN REV. B  3 
 
 
Contents 
Preface ....................................................................................................................................................................9 
Guideline for installation and commissioning .................................................................................................. 11 
Safety information ............................................................................................................................................... 12 
Intended application ................................................................................................. 12 
Special requirements for the operator .................................................................. 12 
Safety information .................................................................................................... 13 
Fidas24: Information on the safe operation of the gas analyzer ...................... 15 
Notes for network and data security ..................................................................... 17 
Version with type of protection II 3G for measurement of non-flammable gases and vapors .................... 18 
Version with type of protection II 3G for measurement of flammable gases ('Safety Concept')   
and non-flammable gases .................................................................................................................................. 20
 
Intended application ................................................................................................ 20 
Important information for the operator ............................................................... 21 
Description..................................................................................................................23 
Internal and external explosion protection ..........................................................  24 
Technical data ........................................................................................................... 25 
Special requirements for operation ....................................................................... 27 
Limas11 IR, Uras26: Version for the 'Safety Concept' .........................................  28 
Caldos25, Caldos27, Magnos206: Version for the 'Safety Concept' ................ 30 
Purge gas flow monitoring ......................................................................................32 
Version for use in Class I Div. 2 explosion hazard areas ................................................................................... 33 
Preparation for installation ............................................................................................................................... 34 
Scope of supply and delivery .................................................................................. 34 
Material required for the installation (not supplied) ......................................... 35 
Installation location ................................................................................................... 37 
Pressure sensor .........................................................................................................  39 
Housing purge ........................................................................................................... 40 
Power supply ............................................................................................................. 42 
Caldos25: Preparation for installation .................................................................. 44 
Caldos27: Preparation for installation .................................................................. 46 
Fidas24: Preparation for installation .................................................................... 48 
Fidas24 NMHC: Preparation for installation ......................................................... 51 
Limas11 IR, Limas21 UV: Preparation for installation ......................................... 54 
Limas21 HW: Preparation for installation .............................................................  57 
Magnos206: Preparation for installation ............................................................. 59 
Magnos28: Preparation for installation ................................................................. 61 
Magnos27: Preparation for installation ................................................................ 63 
Uras26: Preparation for installation ......................................................................  65 
ZO23: Preparation for installation ......................................................................... 67 
Oxygen sensor: Preparation for installation ......................................................... 71