AO2000 CONTINUOUS GAS ANALYZERS  |  OI/AO2000-EN REV. B  33
 
 
 
Version for use in Class I Div. 2 explosion hazard areas 
Intended application 
The AO2000 Series gas analyzers with analyzer modules Caldos25, Caldos27, 
Limas21 UV, Limas21 HW, Magnos206, Magnos28, Magnos27 and Uras26 are 
certified for use in Class 1, Div. 2 explosion hazard areas, Groups A, B, C, and 
D, Temperature code T4. 
Housing versions not equipped with conduit entries must be installed in a 
suitable enclosure, cabinet or rack with provision for connection of Div. 2 
wiring methods, acceptable to the local inspection authority having jurisdic-
tion. 
Certificate 
Certificate No. 1105720 
Warnings 
WARNING – EXPLOSION HAZARD   
Substitution of components may impair suitability for Class I Division 2.   
Secure all connectors with fasteners provided.   
Relay contacts rated 30 V/1 A.   
I/O connectors must only be connected to Class 2 circuits. 
Ratings and ambient temperature 
 
Analyzer module  Rating  Ambient temperature 
Caldos25  max. 25 W  +5 to +45 °C 
Caldos27  max. 17 W  +5 to +50 °C 
Limas21 UV  max. 100 W  +5 to +45 °C 
Limas21 HW  max. 100 W  +15 to +35 °C 
Magnos206  max. 50 W  +5 to +50 °C 
Magnos28  max. 50 W  +5 to +50 °C 
Magnos27  max. 35 W  +5 to +45 °C 
Uras26  max. 95 W  +5 to +45 °C