The flow rate impacts the run time and it determines the duration of smart watering. For example, dripping/emitter system is really slow in moving watering to the ground so it has longer watering duration than other sprinkler system to refill the moisture level up.
You can choose "customized" mode to adjust watering by providing the preferred moisture level and flow rate of your sprinklers. (you will see the estimated water time after adjusting the percentage) Yes Netro will run until the moisture level gets to 90% according to your settings.
Here are some typical flow rate:
MISTER: 2 inch/hour
FIX_SPRAY_HEAD: 1.5 inch/hour
BUBBLER/ROTOR_HEAD: 1.0 inch/hour
ROTARY_NOZZLE: 0.7 inch/hour
ROTARY_EMITTER: 0.5 inch/hour