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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…80 °C
or 150 °C,
(-40 °F…176 °F
or 302 °F) -
Process temperature
-40 °C…80 °C
or 150 °C,
(-40 °F…176 °F
or 302 °F) -
Process pressure / max. overpressure limit
0.7 bar…1.5 bar abs
(10 psi…22 psi) -
Main wetted parts
UP (unsaturated polyester)
Silicon / Al PTFE coated -
Process connection
G / NPT 1″
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Blocking distance
0.7 m / 80 °C,
(2.3 ft / 176 °F),
0.9 m / 150 °C,
(2.9 ft / 302 °F) -
Max. measurement distance
45 m (148 ft)
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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
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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 … 80 °C
or 150 °C
(-40 °F … 176 °F
or 302 °F) -
Process temperature
-40 °C … 80 °C
or 150 °C
(-40 °F … 176 °F
or 302 °F) -
Process pressure / max. overpressure limit
0.7 bar…1.5 bar abs
(10 psi…22 psi) -
Main wetted parts
UP (unsaturated polyester)
Silicon / PE foam (80°C / 176°F)
Silicon / stainless steal (150°C / 302°F)) -
Process connection
G / NPT 1″
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Blocking distance
0.7 m / 80 °C
(2.3 ft / 176 °F)
0.9 m / 150 °C
(2.9 ft / 302 °F) -
Max. measurement distance
45 m (148 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
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Components
Transmitter:
FMU90
Field of application
The FDU95 ultrasonic sensor for continuous, non-contact and maintenance-free level measurement of powdery to coarse bulk materials. 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 solids 45m (148ft).
Sensor for continuous, non-contact level measurement of bulk materials in silos, on belts, stockpiles and in crushers. Typically used in measurements in low structural heights.
Process connection: Thread
Temperature: -40 to +80°C or +150°C (-40 to +176°F or +302°F)
Pressure: +0.7 to +1.5bar (+10 to +22psi)
Maximum measuring range: Solids 45m (148ft)
Blocking distance: 0.7m / 80°C (2.3ft), 0.9m / 150°C (2.9ft)
International explosion protection certificates
Benefits
Integrated temperature sensor for Time-of-Flight correction. Accurate measurements are possible, even if temperature changes are presentSuited for rough ambient conditions thanks to separate installation from the transmitter (up to 300m)Reduced build-up formation because of the self-cleaning effectIntegrated automatic sensor detection for transmitters FMU90/FMU95 for simple commissioningWeather resistant and flood-proof (IP 68)Non-contact measurement method minimizes service requirementsInternational Dust-Ex and Gas-Ex certificates available