5.5 Pressure alarms
Introduction
The columns can be protected by two different types of pressure alarms:
•
The pre-column pressure alarm protects the column hardware
•
The delta-column pressure alarm (only available when V9-C or V9H-C is installed)
protects the column media
Column valves V9-C and V9H-C have built-in pressure sensors that automatically measure
the pre-column and delta-column pressure. If Column valve V9-C or V9H-C is not used
(column is connected without a Column valve or to Column valve V9-Cs or V9H-Cs), the
pre-column pressure is calculated from the system pressure and tubing dimensions.
See the instructions below to set the pressure alarm for the column to be used in the
run and, if applicable, to set the parameters for the tubing dimensions.
Set tubing dimension parameters
to calculate pre-column pressure
For instruments where there is no pre-column pressure sensor, i.e. the column is con-
nected without a Column valve or to Column valve V9-Cs or V9H-Cs, the pre-column
pressure is calculated from the system pressure and tubing dimensions. Follow the in-
structions below to set the tubing dimension parameters.
ActionStep
Select System:Settings in the System Control module.1
Result: The System Settings dialog opens.
114 ÄKTA pure Operating Instructions 29022997 AF
5 Prepare the system for a run
5.5 Pressure alarms
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