SmartFlo is a versatile software for control of Cellix's ExiGo syringe pumps and UniGo or 4U pressure pumps. You don't have to choose between syringe pumps and pressure pumps; you can have both in one set-up, smartly controlled by one seamless software, SmartFlo.
How to use Cellix's SmartFlo Software with the UniGo or 4U pump?
The UniGo or 4U pumps do not require an initialisation. A manual flow rate or a custom flow profile can be applied and executed directly after booting up.
This article covers the following topics - you can read through all of them or click on the links to jump to the topic which interests you:
1. Setting the feedback
The recommended option is to use Flow rate as a feedback parameter for your UniGo or 4U pump. However, advanced users have the option to switch to a pure pressure control by selecting pressure as a feedback parameter. 
To change the feedback parameter:
In the Manual Tab, click on SETTINGS
In the settings window, click on the Advanced settings Icon
Click on Flow/ Pressure to switch between Flow and Pressure
Click on UPDATE