Ultrasonic measurement
Time-of-Flight
Prosonic FDU93

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 25m)

FDU93

Compare

Specs at a glance

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)
Accuracy

+/- 2 mm + 0.17% of measured distance
Main wetted parts

UP (unsaturated polyester)
Silicon / Al PTFE coated

See all specifications

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

Time-of-Flight measuring principle

Extended selection

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

Loading alternative products

Predecessor

Prosonic FDU83

FMU801

Success stories

Level measurement of silos on construction sites

Discover how Profibaustoffe Austria GmbH automated the monitoring of bulk material inside silos to deliver refills on a "just- in-time" basis.
Read the full story
Time saved, safety increased

Employees of Returkraft regularly have to fulfill and document all requirements of the SIL measuring points in the plant.
Read the full story
Extend SIL proof test intervals with new Liquiphant FTL51

Discover how our customer CABB was able to extend SIL proof test intervals with the new Liquiphant FTL51
Read the full story
Optimized logistics concept for tank systems

We implemented a highly effective logistics concept at chemicals distributors Brenntag Schweizerhall AG's Basel site.
Read the full story
Truck loading - safety solved through trusted partnership

Endress+Hauser provides global chemical and plastics distributor with “total turnkey solution”
Read the full story

Measuring principle

Ultrasonic
Characteristic / Application

Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300 m in-between sensor and transmitter
Supply / Communication

4-wire (HART, Profibus DP)
Accuracy

+/- 2 mm + 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...20 mA output
Components

Transmitter:
FMU90, FMU95
Application limits

For tank farms scanner:
FMU95

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

We value your privacy

We use cookies to enhance your browsing experience, collect statistics to optimize site functionality, and deliver tailored advertisements or content.

By selecting "Accept all", you consent to our use of cookies.
For further details please review our cookie policy .

	EN
25/01/2018
08/09/2015
16/01/2013
02/04/2012
31/03/2011

Language:	English
Version:	25/01/2018
File size:	1013 KB
File name:	TI00396FEN_1818.pdf

Language:	English
Version:	11/07/2022
File size:	400 KB
File name:	XA01391FEN_0222-00.pdf

	EN
25/03/2024
15/09/2023
28/10/2021
30/07/2021
19/06/2020

Language:	English
Version:	25/03/2024
File size:	1.1 MB
File name:	TI00426FEN_2524.pdf

Language:	German
Version:	14/10/2022
File size:	10.6 MB
File name:	FA00001F00DE2522.pdf

	EN
11/07/2022
26/03/2018

	EN
01/03/2021
06/09/2005
01/07/2003

	EN
14/09/2020

	EN
10/05/2021
01/08/2016
05/03/2012

Ultrasonic measurementTime-of-FlightProsonic FDU93

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 25m)

Specs at a glance

Process temperature

Process pressure / max. overpressure limit

Max. measurement distance

Accuracy

Main wetted parts

Field of application

Benefits

Videos

Extended selection

Predecessor

Success stories

Level measurement of silos on construction sites

Time saved, safety increased

Extend SIL proof test intervals with new Liquiphant FTL51

Optimized logistics concept for tank systems

Truck loading - safety solved through trusted partnership

Measuring principle

Characteristic / Application

Supply / Communication

Accuracy

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Main wetted parts

Process connection

Blocking distance

Max. measurement distance

Communication

Certificates / Approvals

Options

Components

Application limits

Measuring principle

Characteristic / Application

Supply / Communication

Accuracy

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Main wetted parts

Process connection

Blocking distance

Max. measurement distance

Communication

Certificates / Approvals

Options

Components

Back

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU93, FDU95

TI Weld-in adapter, process adapter and flanges

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

FAU40 alignment unit

Prosonic S FDU93

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU93, FDU95

Prosonic S FDU93, FDU95

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95 EAC: 2Ex nA IIC T6...T3 Gc Ex tc IIIC T55...95°C Dc Safety Instructions

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU93, FDU95

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU93, FDU95, FDU96

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95, FDU96

Prosonic S FDU90, FDU91, FDU91F, FDU92, FDU93, FDU95

Prosonic S FDU93, FDU95

Level measurement

Füllstandsmesstechnik

Back

Unit is not repairable.

Mounting bracket Prosonic S, Micropilot

Sensor support 500mm, 316L

Sensor support 1000mm, 316L, US-sensor

Choose from our suggested options

Individual configuration

Ultrasonic measurement
Time-of-Flight
Prosonic FDU93