Watson-Marlow Qdos30 Universal - Manual (Page 44)

Watson-Marlow qdos30 Universal and Universal+ Pump User Manual 44
16 Contact Mode
In this operating mode the pump will meter a specific dose of fluid when an external
pulse is received.
The dose volume is a user defined value between 1ml and 500l.
16.1 Contact Settings
To setup contact mode firstly you will need to define the settings. To do this press
the MODE key, move the selection bar to contact, and select SETTINGS with the
right hand function key.
This will display the settings, use NEXT to move the selection bar to the next setting.
Use +/- to alter the value of the highlighted setting.
The contact dose is the volume of fluid the pump will dispense when an external pulse
is received on input pin 2. The flowrate will determine the time taken to complete
each dose. Contact memory determines what the pump will do when pulses are
received while a dose is in progress. If set to “ignore” the pulses will be forgotten
by the pump. If set to “add” any pulses received while dosing will be queued up in
memory and will be dispensed when the current dose has finished.
If pulses are buffered in the memory then the pump will not stop between doses.