Specs at a glance
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Accuracy
+/- 2 mm + 0.17% of measured distance
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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) -
Max. measurement distance
Liquids: 25 m (85 ft),
Solids: 15 m (50 ft) -
Main wetted parts
UP (unsaturated polyester)
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. Maximum measuring range in liquids 25m (85ft), solids 15m (50ft).
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 +95°C (-40 to +203°F)
Pressure: +0.7 to +3bar (+10 to +43psi)
Maximum measuring range: Liquids 25m (85ft), solids 15m (50ft)
Blocking distance: 0.6m (2ft)
International explosion protection certificates
Benefits
Integrated temperature sensor for Time-of-Flight correction. Accurate measurements are possible, even if temperature changes are present
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)
Non-contact measurement method minimizes service requirements
International Dust-Ex and Gas-Ex certificates available
Videos
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Standard products
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Technical excellence
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Specialized products
- Designed for demanding applications
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Variable
| FLEX selections | Technical excellence | Simplicity |
|---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
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Lean selection Handle your core processes easily |
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Predecessor
Success stories
9 documents
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Technical Information (TI)
Weld-in adapter, process adapter and flanges
Level and pressure measurement
EN 28/10/202130/07/2021Language:
English
Version:
28/10/2021
File size:
2.9 MB
File name:
TI00426FEN_2321.pdf
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Fields of Activities (FA)
Level measurement
Product overview for applications in liquids and bulk solids
Language:
English
Version:
06/03/2026
File size:
35.8 MB
File name:
FA00001F00EN2726.pdf
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Fields of Activities (FA)
レベル計 総合カタログ
液体および粉体アプリケーション向けレベル計・レベルスイッチ
Language:
Japanese
Version:
23/12/2025
File size:
33.9 MB
File name:
FA00001FJA_2625_Level meter comprehensive catalog.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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Competence Brochure (CP)
Selection Guide, Auswahlhilfe. Kontinuierliche Füllstandmessung in Flüssigkeiten und Schüttgütern
Auswahl- und Projektierungshilfe für die Prozessindustrie
Language:
German
Version:
09/03/2026
File size:
21.1 MB
File name:
CP00023F00DE2126.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:
09/03/2026
File size:
20.8 MB
File name:
CP00023F00EN2126.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-,
FMR20-, FMR20B-, FMR30B-, FMR43-, FMR50-, FMR51-, FMR52-, FMR53-, FMR532-, FMR54-, FMR540-, FMR56-, FMR57-, FMR60B-, FMR62B-, FMR63
B-, FMR66B-, FMR67B-, FMU30-, FMU40-, FMU41-, FMU42-, FMU44-, FMX11-, FMX21-, FTC260-, FTC262-, FTI51-, FTI52-, FTI55-, FTI56-, FTI7
7-, FTL31-, FTL33-, FTL41-, FTL43-, FTL50H-, FTL51B-, FTL51H-, FTL62-, FTL63-, FTL64-, FTL80-, FTL81-, FTL85-, FTM20-, FTM21-, FTM50
-, FTM51-, FTM52-, FTW23-, FTW31-, FTW32-, FTW33-, FWR30-, NMR81-, NMR84-, NMS80-, NMS81-, NMS83-, NMT532-, NMT539-EN 14/03/2025Language:
English
Version:
14/03/2025
File size:
623.3 KB
File name:
HE_02099_01.25.pdf
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Product Carbon Footprint Information
Product family: Prosonic S
Product root: FDU93-
Declaration number: ED_00236_01.25Language:
English
Version:
24/09/2025
File size:
67.4 KB
File name:
FDU93_ED_00236_01.25.pdf
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Metrology
Product family: Prosonic M, Prosonic S, Prosonic T
Product root: FDU91-, FDU91F-, FDU92-, FDU93-, FDU95-, FMU30-, FMU40-, FMU41-, FMU42-, FMU44-, FMU90-, FMU95-
Region: Uzbekistan
Approval agency: UZS
Approval number: 02-2.0312
Metrology type: MetrologyLanguage:
Russian
Version:
13/10/2023
File size:
4.6 MB
File name:
02-2.0312 Prosonic.pdf
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