Specs at a glance Accuracy: +/- 2mm + 0.17% of measured distance ---------------------------------------- Field of application Endress Hauser's Prosonic FMU90 separated version with field housing or top hat rail housing for control cabinet instrumentation are suited for continuous, non-contact level measurement of fluids, pastes, sludge and powdery to coarse bulk solids. Also the flow measurement in open channels and weirs is possible as the simultaneous measurement of level and flow in a storm water overflow basin with only 1 sensor. Up to 6 relays for tendency alarm, flow pulse output or backwater/sludge alarm, 1 or 2 channel version. • Calculations: Average, difference, sum • Application flow: Flow measurement in open channels and weirs with 1 or 2 sensors • Flow measurement with back water or sludge detection • Up to 3 totalizers and 3 counters • Counting or time pulse output for control of external units