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Measuring principle
Ultrasonic
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Characteristic / Application
Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300 m in-between sensor and transmitter
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Supply / Communication
4-wire (HART, Profibus DP)
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Accuracy
+/- 2 mm + 0.17% of measured distance
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Ambient temperature
-40 °C … 95 °C
(-40 °F … 203 °F) -
Process temperature
-40 °C … 95 °C
(-40 °F … 203 °F) -
Process pressure / max. overpressure limit
0.7 bar … 3 bar abs
(10 psi … 43 psi) -
Main wetted parts
UP (unsaturated polyester)
Silicon / Al PTFE coated -
Process connection
G / NPT 1″
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Blocking distance
0.6 m (2 ft)
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Max. measurement distance
Liquids: 25 m (85 ft),
Solids: 15 m (50 ft) -
Communication
Transmitter:
4…20 mA HART
Profibus DP -
Certificates / Approvals
ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, EAC Ex
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Options
Second 4…20 mA output
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Components
Transmitter:
FMU90, FMU95 -
Application limits
For tank farms scanner:
FMU95
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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 … 95 °C
(-40 °F … 203 °F) -
Process temperature
-40 °C … 95 °C
(-40 °F … 203 °F) -
Process pressure / max. overpressure limit
0.7 bar … 3 bar abs
(10 psi … 43 psi) -
Main wetted parts
UP (unsaturated polyester)
Silicon / Al PTFE coated -
Process connection
G / NPT 1″
-
Blocking distance
0.6 m (2 ft)
-
Max. measurement distance
Liquids: 25 m (85 ft),
Solids: 15 m (50 ft) -
Communication
Transmitter:
4 … 20 mA HART
Profibus DP -
Certificates / Approvals
ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, EAC Ex
-
Options
Second 4…20mA output
-
Components
Transmitter:
FMU90
Field of application
The FDU93 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. Maximu