ABB LGR-ICOS GLA531 Series - Z-Purge System Details

Operating Manual
3KXG165002R4201_2021_04 ABB PROPRIETARY INFORMATION 49
GLA531 Series LGR-ICOS™ Gas Analyzer
Z-Purge Type Protection System
The Z-type protection system controller is integrated inside the analyzer enclosure. There is no explosion-proof
housing above the enclosure. Z-type analyzers have the options to be powered with AC or 24 V DC. For electrical
wiring connections, refer to the Commissioning Instructions , document 3KXG165002R4401.
The circuit diagrams in Figure 39 (CDA purge) and Figure 41 (N
2
purge), and the purge flow diagrams in Figure
40 (CDA purge) and Figure 42 (N
2
purge) illustrate the design of the Z-type simple pressurization system and
purge alarm.