GPS-X Technical Reference

297 Other Models
CHAPTER 11
Other Models
SPLITTERS
The proportional splitters in GPS-X can be set up for constant flow split, variable split based on a
timer, or variable split based on flow. In the Parameters > Splitter Set up form you can select the
appropriate splitting mode. They are described below:
Constant
When using this splitting mode, the split fractions do not change (as entered under the Constant
section), or are read from a file, or are controlled by any other method (controller tool or
customization).
Timer based
When using this splitting mode, the split fractions, as entered under the Constant section, will be
rotated through the connection points according to the specified time interval.
Flow based
When using this splitting mode, the split fractions, as entered under the Constant section, will be
rotated through the connection points according to the specified volume. Once the specified
volume has passed through the splitter input, the fractions will be moved to the next output
connection.
A typical example of using this functionality is a multiple train SBR plant, where the influent has
to be sent to a different SBR tank either by timer control or by discharged volume.
CONTROL SPLITTER
A control splitter can be used to split flow into a set flow rate and an overflow. This object is
useful for setting flow bypass controls.
The pumped flow rate is set in the Parameters > Pumped Flow menu. If the incoming flow is
equal to or less than the pumped flow rate, all of the flow will exit through the pump connection
point. If the incoming flow is greater than the pumped flow rate, the excess flow will exit
through the overflow connection point.
An automatic PID controller can be used in this object to control another variable in GPS-X with
the pumped flow rate.
GPS-X Technical Reference