Specs at a glance
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Accuracy
+/- 2mm + 0.17% of measured distance
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Process temperature
-40 °C ... 105 °C
(-40 °F ... 221 °F)
30 min: 135 °C / 275 °F) -
Process pressure / max. overpressure limit
0.7 bar ... 4 bar abs
(10 psi ... 58 psi) -
Max. measurement distance
Liquids: 10 m (33 ft),
Solids: 5 m (16 ft) -
Main wetted parts
316L (fully welded IP68 / NEMA 6P)
Field of application
The FDU91F ultrasonic sensor for continuous, non-contact and maintenance-free level measurement of fluids, pastes, sludges and powdery to coarse bulk materials. Also for flow measurement in open channels and at weirs. Measurement is unaffected by dielectric constant, density or humidity and also unaffected by build-up due to the self-cleaning effect of sensors. Fully welded 316L with hygienic process connection available. Maximum measuring range in liquids 10m (33ft), solids 5m (16ft).
Continuous, non-contact level measurement of fluids and bulk materials in silos, on belts, stockpiles or in crushers. Also for flow measurement in open channels and at weirs. Used in measurements in low structural heights.
Process connections: Thread, Tri-Clamp
Temperature: -40 to +105°C (-40 to +221°F)
Pressure: 0.7 to 4bar (10 to 58psi)
Max. measuring range: Liquids 10m (33ft), solids 5m (16ft)
Blocking distance: 0.3m (1ft)
International explosion protection certificates, hygienic certificates
Benefits
Integrated temperature sensor for Time-of-Flight correction. Accurate measurements are possible, even if temperature changes are present
Hermetically welded sensors (316L, 1.4404, 1.4435) 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)
Hygienic process connections available
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Technical Information (TI)
Prosonic S FDU91F
English version - 09/2020
Ultrasonic measuring technology
EN More 14/09/2020Language:
English
Version:
14/09/2020
File size:
730.6 KB
File name:
TI01471FEN_0120.pdf
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Technical Information (TI)
TI Weld-in adapter, process adapter and flanges
Level, pressure and temperature measurement
EN Select other language 06/12/202425/03/202415/09/202328/10/202130/07/2021Language:
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Version:
06/12/2024
File size:
1.3 MB
File name:
TI00426FEN_2624.pdf
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Technical Information (TI)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95
Ultrasonic measuring technology
EN Select other language 25/01/201808/09/201516/01/201302/04/201231/03/2011Language:
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Version:
25/01/2018
File size:
1013 KB
File name:
TI00396FEN_1818.pdf
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Technical Information (TI)
FAU40 alignment unit
Installation accessory for ultrasonic or microwave sensors with cable
connectionEN Select other language 01/03/202106/09/200501/07/2003Language:
English
Version:
01/03/2021
File size:
446.3 KB
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Technical Information (TI)
TI Khafagi-Venturi QV302 to QV316
Flow measurement
EN Select other language 27/08/202418/05/2022Language:
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27/08/2024
File size:
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Technical Information (TI)
Prosonic S FDU91F
Ultrasonic measuring technology
EN Select other language 14/09/2020Language:
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14/09/2020
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730.6 KB
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TI01471FEN_0120.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92
II 2 G Ex ma IIC T5 Gb
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14/06/2021
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XA00321FEN_1521.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92
II 2 G Ex ma IIC T5 Gb
II 2 G Ex ma IIC T6 GbLanguage:
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Version:
20/12/2021
File size:
401.3 KB
File name:
XA02642FEN_0121-00.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95
II 2 G Ex ma IIC T5 Gb
II 2 G Ex ma IIC T6 Gb
II 1/2 D Ex ta/tb IIIC Txx°C Da/Db
II 2 D Ex tb IIIC Txx°C DbLanguage:
English
Version:
20/12/2021
File size:
416.7 KB
File name:
XA02643FEN_0121-00.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95
Ex ma IIC T* Gb
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Ex tb IIIC T** DbEN Select other language 27/06/202222/01/2015Language:
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File name:
XA01343FEN_0222-00.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92
Ex ma IIC T* Gb
EN Select other language 27/06/202222/01/2015Language:
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95, FDU96
IECEx BVS 08.0012
Ex ma IIC Tx Gb
Ex ta/tb IIIC Txx°C Da/Db IP68
Ex tb IIIC Txx°C Db IP68EN 31/12/201001/11/2008Language:
English
Version:
31/12/2010
File size:
283.3 KB
File name:
XA00481FEN_1310.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92
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505.3 KB
File name:
XA00666FEN_0321.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95
Ex ma IIC T5 Gb
Ex ma IIC T6 Gb
Ex tD A20/21 IP65 T*EN Select other language 10/05/202101/08/201605/03/2012Language:
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10/05/2021
File size:
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File name:
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95
II 2 G Ex ma IIC T5 Gb
II 2 G Ex ma IIC T6 Gb
II 1/2 D Ex ta/tb IIIC Txx°C Da/Db
II 2 D Ex tb IIIC Txx°C DbEN Select other language 14/06/202113/04/201631/12/201001/07/200729/08/2006Language:
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Version:
14/06/2021
File size:
419.4 KB
File name:
XA00322FEN_1521.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95 EAC: 2Ex nA IIC T6...T3 Gc Ex tc IIIC T55...95°C Dc Safety Instructions
Ultrasonic Level Measurement
EN Select other language 03/12/2018Language:
English
Version:
03/12/2018
File size:
149.1 KB
File name:
XA01818FEN_0118.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95
II 3 G Ex ec IIC T5 Gc
II 3 G Ex ec IIC T6 Gc
II 3 D Ex tc IIIC Txx°C DcEN Select other language 27/09/202113/04/201621/11/201301/05/2012Language:
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Version:
27/09/2021
File size:
416.9 KB
File name:
XA00609FEN_0421.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92
IECEx BVS 08.0012
Ex ma IIC T5 Gb (FDU90)
Ex ma IIC T6 Gb (FDU91/91F/92)EN 31/12/201001/11/2008Language:
English
Version:
31/12/2010
File size:
215.8 KB
File name:
XA00482FEN_1310.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95
II 3 G Ex ec IIC T5 Gc
II 3 G Ex ec IIC T6 Gc
II 3 D Ex tc IIIC Txx°C DcLanguage:
English
Version:
20/12/2021
File size:
414.5 KB
File name:
XA02645FEN_0121-00.pdf
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Ex Safety Instruction (XA)
Prosonic S FDU91, FDU91F, FDU92, FDU93, FDU95
1Ex ma IIC T5 Gb X
1Ex ma IIC T6 Gb X
Ex ta/tb IIIC T**°C Da/Db X
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11/07/2022
File size:
418.5 KB
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Ex Safety Instruction (XA)
Prosonic S FDU91, FDU91F, FDU92
1Ex ma IIC T5 Gb X
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Special Documentation (SD)
Application conditions for seals and plastics in the food sector Level measurement, pressure measurement Special Documentation
Application conditions for seals and plastics in the food sector
EN Select other language 23/07/2019Language:
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Version:
23/07/2019
File size:
97.6 KB
File name:
SD02430FEN_0119.pdf
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Fields of Activities (FA)
Level measurement
Product overview for applications in liquids and bulk solids
Language:
English
Version:
14/10/2022
File size:
10.5 MB
File name:
FA00001F00EN2522.pdf
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Fields of Activities (FA)
Misura di livello
Misura di livello
Panoramica dei prodotti per applicazioni in liquidi e solidi sfusiLanguage:
Italian
Version:
03/03/2023
File size:
46.9 MB
File name:
FA00001F00IT2522.pdf
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Fields of Activities (FA)
Füllstandsmesstechnik
Produktübersicht für Anwendungen in Flüssigkeiten und Schüttgütern
Language:
German
Version:
14/10/2022
File size:
10.6 MB
File name:
FA00001F00DE2522.pdf
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Fields of Activities (FA)
Catálogo Medición y Detección de nivel
Gama de productos para aplicaciones con líquidos y sólidos
Language:
Spanish
Version:
01/06/2022
File size:
7.2 MB
File name:
FA00001Fes Catalogo Nivel_24.22.pdf
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Competence Brochure (CP)
Selection Guide, Auswahlhilfe. Kontinuierliche Füllstandmessung in Flüssigkeiten und Schüttgütern
Auswahl- und Projektierungshilfe für die Prozessindustrie
Language:
German
Version:
18/10/2022
File size:
18.5 MB
File name:
CP00023F00DE1922.pdf
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Competence Brochure (CP)
Selection Guide Continuous level measurement in liquids and bulk solids
Selection and engineering guide for the process industry
Language:
English
Version:
18/10/2022
File size:
18.3 MB
File name:
CP00023F00EN1922.pdf
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White paper (WP)
Radar vs. Ultrasonic Sensors: Fit-for-Purpose Technology
Comparing the advantages and disadvantages for level measurement
Language:
English
Version:
18/08/2021
File size:
821.8 KB
File name:
EHUltrasonic_VS_radarLevelQA21.pdf
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Manufacturer Declaration
Product family: Cerabar, Cerabar M, Cerabar S, Ceraphant, Deltabar, Deltabar M, Deltabar S, Deltapilot M, Fieldgate, Gammapilot, Lev elflex, Liquicap M, Liquicap T, Liquiphant, Liquiphant FailSafe, Liquiphant M, Liquipoint, Liquipoint T, Liquitrend, Micropilot, Mic ropilot S, Minicap, Fermentation monitor, Prosonic M, Prosonic S, Prosonic T, Solicap M, Solicap S, Soliphant M, Soliphant T, Spare parts level, Strahlenschutzbehälter, System & Gauging, Tankvision, Waterpilot
Product root: FDU90-, FDU91-, FDU91F-, FDU92-, FDU93-, FDU95-, FHX40-, FHX50-, FHX50B-, FMB50-, FMB51-, FMB52-, FMB53-, FMD71-, FMD7
2-, FMD77-, FMD78-, FMG50-, FMI21-, FMI51-, FMI52-, FMP50-, FMP51-, FMP52-, FMP53-, FMP54-, FMP55-, FMP56-, FMP57-, FMR10-, FMR10B-,
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Version:
14/03/2025
File size:
623.3 KB
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HE_02099_01.25.pdf
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Manufacturer Declaration
Product family: Cerabar, Cerabar M, Cerabar S, Cerabar T, Ceraphant, CERAPHANT T, DELTABAR, Deltabar M, DELTABARS, Deltapilot M, DELTAPILOT S, DOPPELSTABSONDE, Dreistabsonde, Einstabsonde, Levelflex, Liquicap M, LIQUICAP T, LIQUIPHANT, LIQUIPHANT FAILSA FE, LIQUIPHANT M, Liquiphant S, LIQUIPHANT T, LIQUIPOINT, Liquipoint T, Micropilot, Micropilot S, MINICAP, NIVECTOR, NIVOCOM PACT, NIVOTESTER, Prosonic, Prosonic M, PROSONIC P, PROSONIC S, Prosonic T, Solicap M, Solicap S, Soliphant M, SOLIPHANT T, SOLIWAVE, WATERPILOT
Declaration number: HE_00678_01.17
Manufacturer specification: Food hygiene
Additional information: ADI, TSEEN Select other language 12/07/2022Language:
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Version:
12/07/2022
File size:
185.9 KB
File name:
HE_00678_02.22_TSE freedom for EH products.pdf
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