This manual describes the Liquid Orifice measurement application for Totalflow XSeries and microFLO devices. It covers the initial setup and testing of the application. The manual details how to enable the application, configure default parameters via General and Constants tabs, set limits, use command functions, manage log capacity, and view current values. It also provides detailed instructions on calibrating and verifying the Liquid Orifice measurement setup, including specific steps for using PCCU software and hardware tools.