Agilent Technologies 1200 Series User Manual page 27

Setup pump (continued)
4 Timetable
5 Pressure limits
1200 Series Nano Pump User Manual
You can use the Timetable to program changes in the Pump
parameters during the analysis by entering a time in the Time
field and appropriate values in the following fields of the
timetable. The values in the Pump timetable change linearly
with respect to time from the initial value to the value at the
time defined in the timetable
Select the Insert button to insert a line above the
currently-selected line.
Select the Append button to add a line to the end of the
table.
Select the Cut button to delete the currently-selected line
and place it on the clipboard.
Select the Copy button to copy the currently selected line to
the clipboard.
Select the Paste button to paste the line on the clipboard at
the current position.
Select the Display combination box and select Flow/Press
or Solvents to display graphical representations of the flow
rate/pressure limit or solvent compositions, or Timetable to
display the table for editing. In the graphics mode, select
Legend to display the graph titles.
Sets the maximum and minimum pressure limits for the
pump.
Max is the maximum pressure limit at which the pump will
switch itself off, protecting the analytical system against
over-pressure.
Min is the minimum limit at which the pump will switch
itself off, for example, if any solvent reservoir is empty, this
prevents system damage through pumping air.
NOTE: The minimum pressure limit becomes active only
when the actual pressure rises above the limit.
For the system to create an error, the limits must be
exceeded for a few seconds.
Getting started
Parameters which can be
changed:
Time
Time at which the change
occurs.
%B
Solvent composition (0 to
100%). The residual
percentage is solvent A.
Flow
Solvent flow rate.
Max. Pressure
System max pressure limit.
The maximum pressure limit
for the nano pump is 400 bar.
The minimum pressure limit
for the nano pump can be
any value from 0 through
(P-1) bar, where P is the
maximum pressure setting.
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