ABB AO2000-LS25 - Use in Potentially Explosive Atmospheres in Accordance with ATEX and Iecex; Use in ATEX; Iecex Zone 1; Introduction; Design

AO2000-LS25 LASER ANALYZERS | OI/AO2000-LS25-EN REV. D 7
2 Use in potentially explosive atmospheres in accordance with ATEX and IECEx
Use in ATEX / IECEx Zone 1
Introduction
This part of the Operating Instruction contains information of installation, operation and maintenance of the analyzer, ATEX / IECEx
Zone 1 version.
Design
A
Non-hazardous area
B
Hazardous area (Atex / IECEx, Zone 2)
C
Hazardous area (Atex / IECEx, Zone 1)
D
Purge gas inlet
E
Purge gas lines
F
Purge gas outlet
G
Signal cable
H
Power supply cable 24 V DC
I
Inputs / Outputs
1
Receiver unit
2
Transmitter unit
3
Purging gas valve (pressurized encapsulation)
4
Interface relays
5
Power supply, either in ATEX Zone 2 or outside the hazardous area
6
Purging and monitoring unit (pressurized enclosure)
Figure 1: Device design ATEX / IECEx version with pressurized enclosure