FlowCon is an external display and programming unit which can be used with Flowmax ultrasonic flow meters. FlowCon also can be permanently installed as a separate display for Flowmax. Alternatively, the FlowCon serves as a mobile unit for commissioning or commissioning the Flowmax in the field. when it's difficult to reach Flowmax or it does not have a display. Configured Flowmax outputs retain full functionality using FlowCon. Output signals such as analog, pulse or alarm output can be used for further processing by external systems such as PLCs, loggers or external counting units. The FlowCon's display has an illuminated background and offers visualization of the current counter and current flow in the Flowmax, as well as possible errors detected by the Flowmax. All functions available on Flowmax as scale values like an analog output, pulse value, internal counter reset etc. can be changed via the keypad on Flowmax. Using the supplied plug-in power supply and Y/T plug, the device combination FlowCon/Flowmax can be operated independently of the plant's power supply.