User`s guide

Appendix F-5
Technical Data Appendix F
Control and Interfaces
Control and Interfaces
Operation Modes
Constant flow rate (Flow), constant volume
(Dispense), and timed-based sequence (Program) for
up to four Gilson pumps controlled either by one
305 acting as a Master 305, or by an external
computer.
Programmable Parameters
Solvent composition points for high pressure mixing
of 3 solvents from 3 pumps.
Flow rate points that can be superimposed over
gradient composition profile.
Timed events for programming 3 output contact
closures, 1 input and 1 injection pump.
Time, adjustable from 10
-2
to 10
4
min, with
increments from 0.001 to 1 min depending on the
range used.
Flow control, adjustable from 0.01 % to 100 % of the
maximum flow rate of the pump head being used.
Possibility to program 999 loops with unlimited
linking of files.
Storage for 10 user programs and 4 error files with a
maximum of 25 points and timed events in each
program.
Dispense Mode
The dispensed volume is fully adjustable, in mL,
between 10-4 and 100 mL multiplied by the model
number of the pump head. The same range is available
for the injection pump in the program mode.
User Interface
2-line, 48-character LCD display.
Front panel keypad.
Built-in help messages.