User`s guide

CO NSTANT RATE P ROFI LE
The Constant Rate profile is used to run the pump at a defined flow rate and for a specific pumping mode
(infuse or withdraw) up to a target volume or for a defined time period.
Figure 46: Constant Rate Pump Operation Profile.
When creating or editing a Constant Rate profile, you will define three primary operating parameters:
• The Flow Mode defining the direction of flow: infuse or withdraw
• The Flow Rate to define the rate of uptake or dispensing
• The Target Volume or Run Time that determine how long the pump will operate at the set rate
When creating or editing a Constant Rate profile, you can set the rate in ml, µl, nl or pl units of volume
using sec, min or hr as the units of time. The system automatically calculates a minimum and maximum
flow rate based on the syringe selected or custom-defined. The min/max values are made available as
button selection options on the Set Infuse and Withdraw Rate screens.
Figure 47: Constant Rate Profile Setup Screen
TO SET UP/EDIT A CONSTANT RATE PROFILE:
1. From the Step Definition screen for a Constant Rate profile, choose the Set Mode button to toggle the
Flow Mode between Infuse and Withdraw operation.
2. Choose the Set Rate button to enter the Set Rate screen.
3. Enter the flow rate value desired using the keypad or select the Minimum Rate or Maximum Rate
button.
4. If the Units of Rate are not correct for your application, choose the Units button.
5. On the Units Selection screen, select the unit of measure (ml, µl, nl or pl) and the unit of time (sec,
min, hr) as appropriate, then choose Accept to confirm your selections.
Flow
Rate
Time | Volume
S
TOP
T
arget Time or
T
otal Volume
P
oint
Harvard Apparatus PHD ULTRA
™
Syringe Pump Series User's Manual
Publication 5419-002-Rev-A
53
U
sing The PHD ULTRA™