3-10 Using the Waters 515 Pump
Comp Sets the
compressibility
factor to
compensate for
differences in
eluent
compressibility
The Comp range is from –25 to +25% in
1% increments; the default setting is 0%.
You can set the Comp factor while the
pump is idle or running in either Local or
Rem mode. When you change to less
compressible eluents, enter a more
negative Comp factor.
Calibrate Provides access to
the Calibrate
submenu
selections
Press the Edit/Enter key twice to access
the Calibrate submenu selections.
0 Pressure Sets zero pressure
for the pump
The pressure reading displayed is the
true pressure with no rounding. This
parameter comes factory set. See “Setting
zero pressure” on page 4-5, for details.
Head Size Selects the size of
the installed pump
head: 100-µL or
225-µL
The default setting is 100µL. See “Setting
the head size” on page 4-6 for details.
Flow Rate
Calibration
Recalibrates the
pump flow rate
after head
replacement
The initial value shown in the display
reflects the default setting for degassed
methanol at 1 mL/min and 1000 to 2000
psi (6895 to 13,790 kPa, 66.8 to 133.6
bars). You can make adjustments in 0.1%
increments. See “Calibrating the flow
rate” on page 4-7 for details.
Strokes on
Unit
Displays the total
number of plunger
strokes for the
pump
The value is the total number of plunger
strokes. This value is for reference only
and cannot be reset.
515 pump operating parameters (Continued)
Parameter Function Details
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