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Introduction To The PHD ULTRA™
Introduction To The PHD ULTRA™ Pump
PRODUCT OVERVIEW – THEORY OF OPERATION
The PHD ULTRA™ Syringe Pump series is a family of high-accuracy, microliter- and milliliter-compatible
pumps designed for versatile technical use including mass spectroscopy, calibration, drug and nutritional
infusions, microdialysis, dispensing, chromatography and LC/HPLC.The PHD ULTRA™ incorporates a
microprocessor controlled, small step angle stepping motor that drives a lead screw and Pusher Block.
Advanced micro-stepping techniques are employed to further reduce the step angle to eliminate flow
pulsation. The pump is engineered to provide flow accuracy within 0.35% and reproducibility within
0.05%.
The PHD ULTRA™ uses a touchscreen interface and advanced software to control operation. External I/O
interfaces permit external control via an independent computer or device.The application software
provides convenient selection of common syringe models from a Syringe Lookup Table, as well as insertion
of custom syringe specifications.The system is then able to calculate the cross-sectional area of the syringe
selected and calibrate the flow rate and volume accumulation, displaying real-time operating characteristics
via on-screen graphics.
PUMP MODELS
The PHD ULTRA™ Syringe Pump is available in three models designed for different operating environments
and varying degrees of operational flexibility.
•
Infusion Only: This model supports infusion operations at user-definable flow rates and with
selectable target volume or time values to control the total infusion volume. The entry-level Infusion
Only model does not include programmable, user-defined methods.
•
Infusion/Withdrawal: This model supports infusion and withdrawal operations at user-definable flow
rates and with selectable target volume or time values to control the total volume pumped for both the
infusion and withdrawal portions of a procedure. This model provides access to many of the advanced
method programming options of the PHD ULTRA™, but only supports a single stored Method.
•
Infusion/Withdrawal Programmable: This model supports both infusion and withdrawal operations,
and can use both simpified pumping profiles or the more advanced pumping profiles and I/O settings
that permit interactions with external devices. In addition to supporting all of the advanced
programming tools available on the PHD ULTRA™, this model also allows users to create and store
multiple user-defined Methods on the pump.
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NOTE: This manual has been written to accommodate Infuse/Withdraw/Programmable
configurations. Where features/capabilities are not available in the Infuse Only or
Infuse/Withdraw basic models, we have identified that in the manual.
PUMP CONFIGURATIONS
The PHD ULTRA™ Syringe Pump is available in the following configurations:
•
Standard Pump: This configuration is the most common. It consists of a single unit with the syringe
pumping mechanism attached to the top of the control box.
•
Remote Pump: This configuration is a two piece unit, with the syringe pumping mechanism and the
control box separated by a 30 foot cable. Two meter, one meter and 0.5 m cables are available for
purchase separately for RS-485 remotes. A 6 foot cable is available for the Legacy remotes.
•
Push/Pull Pump: This configuration consists of a single unit with the syringe pumping mechanism
attached to the top of the control box. The pump can hold up to four syringes; 2 on either side of the
pusher block. The pump can simultaneously infuse and withdraw the exact same amount.
•
Satellite Pump Units: Satellite units consist of a syringe pumping mechanism and control electronics
but do not have a user interface. They are powered and controlled from a master/stand-alone
PHD ULTRA™ via the RS-485 cable.
Publication 5419-002-Rev-E
Harvard Apparatus PHD ULTRA™ Syringe Pump Series User’s Manual
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