indicates all systems are functioning normally and as applicable safety devices are enabled in this normal state light bars 50 and 52 are unlit or colorless accordingly no action is indicated or required to keep the system functioning normally in such system state additionally the system status message box 46 displays information about the highest priority alert or alarm the user interface 14 is preferably pre programmed so that alerts or alarms are prioritized preferably the highest priority alert or alarm is displayed and when that alert or alarm is corrected the next highest alert or alarm is displayed if any in the normal state of operation and as illustrated in fig6 the system status message box 46 is preferably displayed without a corresponding green color code although the system status message box 46 may be color coded if desired that is message box 46 can be white or grey for example or match the background color of other screen elements as desired in fig7 user interface 14 is illustrated in a state of malfunction and with an indication of an alert an alert indicates a condition other than normal operation and that requires attention by an operator in this case the state of malfunction is a flow system malfunction an alert notification preferably includes a steady paced beep or other audible signal and.