Publication 5419-013 REV1.0
22
In Reciprocating Condition, the two syringe channels move in
opposite directions at the same rate using the same syringe size
and type. For example, when P1 is infusing, P2 is withdrawing at
the same rate. When combined with a valve box, the reciprocating
condition can provide the continuous fluidic delivery of a peristaltic
pump with the accurate, smooth, low flow rates provided by a
syringe pump.
Select “Reciprocating” from the Condition Select Screen.
The Reciprocating Condition Setup follows the same procedure as
Independent condition with one exception. The user only needs
to set the Mode Select, Syringe Select, Rate Select and Target
Select for the P1 Pump Channel and the P2 Pump Channel will be
automatically set.
Reciprocating Condition Setup
P33 DDS Condition Select Screen (Reciprocating Condition Selected)
Reciprocating Condition Setup Screen
1) MODE SELECT - Select the Mode for Pump Channel 1 & Pump
Channel 2. Reciprocating Condition will automatically set the
opposite mode for P2 once the user sets the P1 mode.
The two Modes are:
a. Infuse/Withdraw - The syringe will operate in Infuse/Withdraw
mode only. P1 will infuse first while P2 is withdrawing. Facing
the Pump 33 DDS, the pusher block for the infusing pump
channel will push the syringe plunger from left to right at the
set flow rate and volume/time while infusing and the pusher
block for the withdrawing channel will pull the syringe plunger
from right to left at the set flow rate while withdrawing. The
infuse and withdraw flow rates can be different. For example:
An experiment may require a low flow rate for infusion but
require a fast withdraw rate for quick syringe refill.
b. Withdraw/Infuse - The syringe will operate in Withdraw/Infuse
mode only. P1 will withdraw first while P2 is infusing. Facing
the Pump 33 DDS, the withdrawing channel will pull the syringe
plunger from right to left at the set flow rate while withdrawing.
The pusher block for the infusing pump channel will push
the syringe plunger from left to right at the set flow rate and
volume while infusing. The infuse and withdraw flow rates can
be different. For example: An experiment may require a low
flow rate for withdrawal but require a fast infuse rate for
quick delivery.
P33 DDS Reciprocating Condition Mode Select Screen
(Showing P1 Selection and P2 Setting)