SyriXus Series Pumps Installation and Operation Guide
Section 3 Basic Programming and Operation
3-20
EAR99 Technology Subject to Restrictions Contained on the Cover Page
NOTE
If you make an error, press CLEAR ENTRY to delete one character
at a time.
4. Press ENTER once the desired pressure is displayed.
5. Press RUN to initiate pump operation.
3.10.3 Dispense Mode
For applications such as reactant feed and batch delivery where a
specified volume is pumped, use Dispense Mode. Dispense Mode flow
rate begins at zero, ramps up to level out at the programmed flow rate,
then ramps back down to zero, delivering a precise specified volume.
The slope rate and run time are dependent upon the pump model
being used.
Figure 3-11 Depiction of dispense mode sequence
NOTE
For time-controlled delivery, you must run the pump in standard Gra-
dient Mode, as described in Section 4 "Gradient Pumping for Pres-
sure, Flow, and Concentration Modes".
•
In order to access Dispense Mode control, the pump must be in
Constant Flow Mode. Press CONST FLOW to enter this mode.
Toggle Dispense Mode OFF or ON by pressing DISP. Note that
pressing the DISP key while in Constant Pressure Mode has no
effect.
•
To adjust the flow rate, press
FLOWRATE
(
A
)
, enter the desired
rate using the number keys, and press
ENTER
.
•
To specify the volume of the batch delivered, press
VOLUME
(
C
)
,
enter the desired volume using the number keys, and press
ENTER
.
•
To dispense the batch, press
RUN
. The sequence runs once, then
stops. To repeat the sequence, press
RUN
again.
NOTE
When the system is in Dispense Mode, all Gradient Modes, Con-
stant Pressure Mode, auto-refill, and serial control are unavailable
until Dispense Mode is turned OFF.
0
Specified Flow
Start
Stop
ramp up
ramp down