WPI NANOLITER2020, Инструкция по эксплуатации

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NANOLITER 2020/200704
World Precision Instruments 13
Defining Syringe Parameters
The syringe parameters are set on the Configuration screen for your selected pump.
1. To access the
Configuration
screen, select a pump by tapping on the display from the
Command screen. Then, click Configure for your selected pump. See “Accessing the
Configuration Screen” on page 12.
Fig. 20— The syringe parameters are shown across the top of the Configuration screen.
• Volume Target shows the volume in nanoliters that the pump is set to deliver.
Whenever a parameter is changed, the controller calculates the actual volume
that can be delivered. It is not always possible to deliver the exact desired volume
because of the limits of discrete motor steps.
• Actual Delivery is read only and not directly editable. It is not always possible to
deliver the exact target volume. The unit calculates the actual delivery volume
to be as close as possible to the target volume based on the selected step
microstepping and syringe size. This value changes to reflect the effects of
changes to the target volume, syringe type and motor drive selection.
• Delivery Rate shows the rate at which the volume is dispensed by the pump.
The unit for this parameter can be set to nL/sec or nL/min. The units are set by
pressing the corresponding radio button on the Configuration screen. The units
are updated on the text box as the unit is selected.
Four white navigation buttons in the center of the Syringe Stop Definition screen
(Withdraw, Rapid Withdraw, Rapid Infuse and Infuse) let you inject or withdraw
the pump at two different rates, fast or slow.
Fig. 21— The Syringe Stop Definition screen buttons let you inject or withdraw at different speeds.
2. To update the volume target or the delivery rate, tap the text field. A keypad appears
with 0.0 in the text field. Use the keypad to enter the desired value.
Fig. 22—Use the keypad to change the Volume Target. A similar keypad appears when you press
the Volume Counter or the Delivery Rate fields.