Accuracy:
±2 mm + 0.17% of measured distance
Process Temperature:
-40°C to +80°C (-40°F to +176°F)
Process Pressure:
0.7 bar to 4 bar abs (10 psi to 58 psi)
Max. Measurement Distance:
Liquids: 10 m (33 ft)
Solids: 5 m (16 ft)
Main Wetted Parts:
Fully welded PVDF, IP68/NEMA6P rated for chemical resistance and weatherproofing
Field of Application:
The FDU91 ultrasonic sensor is designed for continuous, non-contact, and maintenance-free level measurement of fluids, pastes, sludges, and bulk materials ranging from powders to coarse materials. It is also used for flow measurement in open channels and weirs. The sensor is unaffected by dielectric constant, density, humidity, and has a self-cleaning feature to reduce build-up. It is suitable for hazardous environments with international explosion protection certificates.
Integrated Temperature Sensor:
For Time-of-Flight correction, ensuring accuracy even with temperature fluctuations.
Self-Cleaning Design:
Minimizes build-up on the sensor, ensuring consistent readings.
Separation from Transmitter:
Allows up to 300 m distance between sensor and transmitter, suitable for rough ambient conditions.
Hermetically Sealed PVDF Sensor:
Ensures high chemical resistance and durability in challenging environments.
Weatherproof & Flood-Proof:
IP68/NEMA6P protection for outdoor and demanding installations.
Integrated Heating (Optional):
Prevents ice formation for reliable operation in cold environments.
Process Conditions:
Operating Temperature: -40 to +80°C (-40 to +176°F)
Pressure Range: 0.7 to 4 bar (10 to 58 psi)
Probes & Installation:
Process Connection: G or NPT 1″ thread
Blocking Distance:
Liquids & solids: 0.3 m (1 ft)
Communication & Integration:
Communication:4-wire with HART or Profibus DP
Transmitter Compatibility:
FMU90, FMU95
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