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 stormwater overflow basin with only 1 sensor. The system can accommodate up to 6 relays for tendency alarm, flow pulse output, or backwater/sludge alarm, available in either 1- or 2-channel versions.

Level measurement of fluids and bulk materials with 1 or 2 sensors for measuring up to 45m (148ft) and level limit detection. Pump control, rake control and as option: additional pump control function.

• 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

• Simple, menu-guided operation with 6-line plain text display, 15 languages selectable
• Envelope curves on the display for quick and simple diagnosis
• Easy operation, diagnosis and measuring point documentation with the supplied "FieldCare" operating program
• Time-of-Flight correction via integrated or external temperature sensors
• Linearisation (up to 32 points, freely configurable) for the most common flumes and weirs pre-programmed and selectable
• Online calculation of the flume/weir flows via integrated flow curves
• Automatic detection of the sensors FDU9x