ABB LGR GLA351 Series - Fast and Slow Flow Pump Options

USER MANUAL | ICOS | INSTRUCTIONS | UM/ICOS-EN REV. B.2
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Figure 8 shows the optional fast flow plumbing diagram. Configurations may vary
depending on analyzer type.
Figure 8: Plumbing Diagram for Fast Flow Mode analyzers
Fast and Slow Flow Pump Options
Some analyzers come equipped with an internal pump. However, the optional external
pump provides the ability to achieve a faster flow response.
In fast-flow mode, you must connect a compatible external pump to the analyzer. Table 5
describes the compatible pump options.
Flow-through times of the available external pumps:
 3-head diaphragm vacuum pump (ACC-DP3H)
o Provides flow-through (1/e) time = 1.2 seconds
 4-head diaphragm vacuum pump (ACC-DP4H)
o Provides flow-through (1/e) time = 0.5 seconds
 Dry Scroll Vacuum Pump (ACC-DS10)
o Provides flow-through (1/e) time = <0.1 seconds
Table 5: Pump Options
Modes of
Operation
Internal ACC-
DP3H
ACC-
DP4H
XDS-35 Remarks
Standard Mode
X
X
Fast Flow Mode X X X X See Appendix
Fast Flow
Operation on
page
107
.