Endress+Hauser FDU91-RG2AA Ultrasonic measurement Time-of-Flight Prosonic FDU91

Product name : Prosonic S FDU91

Extended order code : FDU91-RG2AA

R-Approval : Non-hazardous area

G-Process Connection : Thread ISO228 G1, PVDF

2-Cable Length:10m/32ft

A-Heater:W/o

A- Additional Option : Basic version

Specs at a glance

1. Process temperature
   -40 °C ... 80 °C
   (-40 °F ... 176 °F)

2. Process pressure / max. overpressure limit
   0.7 bar ... 4 bar abs
   (10 psi ... 58 psi)

3. Max. measurement distance
   Liquids: 10 m (33 ft),
   Solids: 5 m (16 ft)

4. Accuracy
   +/- 2 mm + 0.17% of measured distance

5. Main wetted parts
   PVDF (fully welded IP68 / NEMA6P

Field of application

The FDU91 ultrasonic sensor for continuous, non-contact and maintenance-free level measurement of fluids, pastes, sludges and powdery to coarse bulk materials. But also for flow measurement in open channels and measuring weirs. The measurement is unaffected by dielectric constant, density or humidity and also unaffected by build-up due to the self-cleaning effect of sensors. Suited for explosion hazardous areas. Maximum measuring range in liquids 10m (33ft), solids 5m (16ft).

Sensor for continuous, non-contact level measurement of fluids and of bulk materials in silos, on belts, stockpiles and in crushers. Also for flow measurement in open channels and at weirs. Typically used in measurements in low structural heights.

  -Process connection: Thread

  -Temperature: -40 to +80°C (-40 to +176°F)

  -Pressure: +0.7 to +4bar (+10 to +58psi)

  -Maximum measuring range: Liquids 10m (33ft), solids 5m (16ft)

  -Blocking distance: 0.3m (1ft)

  -International explosion protection certificates

Related Product Recommendation: