Prosonic - Model FDU91 - Ultrasonic Measurement Time-of-Flight
From Level Measurement-
Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 10m). 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).
Benefits
-
Integrated temperature sensor for Time-of-Flight correction. Accurate measurements are possible, even if temperature changes are present
-
Hermetically welded PVDF sensor for highest chemical resistance
-
Suited for rough ambient conditions thanks to separate installation from the transmitter
(up to 300m) -
Reduced build-up formation because of the self-cleaning effect
-
Integrated automatic sensor detection for transmitters FMU90/FMU95 for simple commissioning
-
Weather resistant and flood-proof (IP 68)
-
Integrated heating against a build-up of ice at the sensor (optional) ensures reliable measurement
Field of Application
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
Features and Specifications
-
Measuring principle
Ultrasonic
-
Characteristic / Application
Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300m in-between sensor and transmitter
-
Supply / Communication
4-wire (HART, Profibus DP)
-
Accuracy
+/- 2mm + 0.17% of measured distance
-
Ambient temperature
-40 °C ... 80 °C
(-40 °F ... 176 °F) -
Process temperature
-40 °C ... 80 °C
(-40 °F ... 176 °F) -
Process pressure absolute / max. overpressure limit
0.7 bar ... 4 bar abs
(10 psi ... 58 psi) -
Main wetted parts
PVDF (fully welded IP68 / NEMA6P)
-
Process connection
G / NPT 1'
-
Blocking distance
0.3 m (1 ft)
-
Application
-
Max. measurement distance
10 m (33 ft)
-
Communication
Transmitter:
4 ... 20 mA HART
Profibus DP -
Certificates / Approvals
ATEX, FM, CSA, IEC Ex, TIIS, INMETRO, NEPSI
-
Options
Second 4...20mA output
-
Components
Transmitter:
FMU90, FMU95 -
Application limits
Foam / high turbulence possible:
FDU92
Flange-flush assembly:
FDU91F
For tank farms scanner:
FMU95
Customer reviews
No reviews were found for Prosonic - Model FDU91 - Ultrasonic Measurement Time-of-Flight. Be the first to review!