Ultrasonic measurement
Time-of-Flight
Prosonic FMU30

Cost effective all-round instrument for level applications in liquids and bulk solids

FMU30

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Specs at a glance

Accuracy

+/- 3 mm or +/- 0.2 % of set measuring range
Process temperature

-20 °C...+60 °C
(-4 °F...+140 °F)
Process pressure / max. overpressure limit

0.7 bar...3 bar abs
(10 psi ...44 psi)
Max. measurement distance

Sensor 1-1/2": 2 m (6.6 ft)
Sensor 2": 3.5 m (11 ft)
Main wetted parts

PP/EPDM

See all specifications

Field of application

The range of applications extends from monitoring levels in sewage treatment plants and process water tanks to applications for loading, storage and buffer tanks. FMU30 ultrasonic sensor offers proven software algorithms and all warning and alarm messages are shown on the four-line plain text display and guarantee fast remedy of problems. The envelope curve can also be shown on the display. As the analysis results are displayed directly on-site, this ensures quick and accurate error diagnostics.

Two-wire instrument for continuous non-contact level and flow measurement.

Process connection: Thread
Temperature: -20 to +60°C (-4 to +140°F)
Pressure: +0.7 to +3bar (+10 to +44psi)
Maximum measuring distance:
Sensor 1½" for liquids 5m (16ft) and for bulk solids 2m (6.6ft),
Sensor 2" for liquids 8m (26ft)and for bulk solids 3.5m (11ft)
Blocking distance:
Sensor 1½" 0.25m (0.8ft),
Sensor 2" 0.35m (1.15ft)
International explosion protection certificates

Benefits

Quick and simple commissioning via menu-guided onsite operation with four-line plain text display, 7 languages selectable
Envelope curves on the on-site display for simple diagnosis
Linearization function (up to 32 points) for conversion of the measured value into any unit of length, volume or flow rate
Non-contact measurement method minimizes service requirements
Installation possible from thread G 1½ or 1½ NPT upwards
Integrated temperature sensor for automatic correction of the temperature dependent sound velocity

Videos

Time-of-Flight measuring principle

Fundamental selection

Simple products
Easy to select, install and operate

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

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Predecessor

Prosonic T FMU230E
Prosonic T FMU231E

Prosonic T FMU230A
Prosonic T FMU231A

Success stories

Smart hardware and cloud-based software increase efficiency

Smart hardware and cloud-based software increase efficiency
Read the full story
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
Basics of continuous level measurement

Common technologies available for continuous level measurement are ultrasonic, free space radar, guided wave radar, capacitance, gamma and pressure.
Read the full story
Measuring the level of bulk solids stored in silos

Click for guidance on how and where to use guided wave radar, ultrasonic or pulse radar, when measuring the level of bulk solids in silos!
Read the full story

Measuring principle

Ultrasonic
Characteristic / Application

Compact ultrasonic transmitter
Supply / Communication

2-wire
Accuracy

+/- 3 mm or +/- 0,2 % of set measuring range
Ambient temperature

-20 °C ... 60 °C
(-4 °F ... 140 °F)
Process temperature

-20 °C ... 60 °C
(- 4°F ... 140 °F)
Process pressure / max. overpressure limit

0.7 bar ... 3 bar abs
(10 psi ... 44 psi)
Main wetted parts

PP/EPDM
Process connection

G / NPT 1 1/2"
G / NPT 2"
Blocking distance

1 1/2": 0.25 m (0.8 ft)
2":0.35 m (1.15 ft)
Application

Application
Max. measurement distance

Max. measurement distance
Communication

4...20 mA
Certificates / Approvals

ATEX, CSA C/US, IEC Ex, NEPSI
Options

Accessory Enclosed:
UNI flange 2" ... 4"
Application limits

Application limits

Measuring principle

Ultrasonic
Characteristic / Application

Compact ultrasonic transmitter
Supply / Communication

2-wire
Accuracy

+/- 3 mm or +/- 0.2 % of set measuring range
Ambient temperature

-20 °C ... 60 °C
(-4 °F ... 140 °F)
Process temperature

-20 °C ... 60 °C
(-4 °F ... 140 °F)
Process pressure / max. overpressure limit

0.7 bar ... 3 bar abs
(10 psi ... 44 psi)
Main wetted parts

PP/EPDM
Process connection

G / NPT 1 1/2"
G / NPT 2"
Blocking distance

Sensor 1 1/2": 0.25 m
Sensor 2": 0.35 m
Max. measurement distance

Sensor 1-1/2": 2 m (6.6 ft)
Sensor 2": 3.5 m (11 ft)
Communication

4...20 mA
Certificates / Approvals

ATEX, CSA C/US, IEC Ex, NEPSI
Options

Accessory Enclosed:
UNI flange 2" ... 4"
Application limits

Take notice of range diagram

Measuring principle

Ultrasonic Limit
Characteristic / Application

Compact ultrasonic transmitter
Supply / Communication

2-wire
Ambient temperature

-20 °C...+60 °C
(-4 °F...+140 °F)
Process temperature

-20 °C...+60 °C
(-4 °F...+140 °F)
Process pressure / max. overpressure limit

0.7 bar...3 bar abs
(10 psi ...44 psi)
Main wetted parts

PP/EPDM
Process connection

G / NPT 1 1/2"
G / NPT 2"
Blocking distance

Sensor 1 1/2": 0.25 m,
Sensor 2": 0.35 m
Communication

4...20 mA
Certificates / Approvals

ATEX, CSA C/US, IEC Ex, NEPSI
Options

Accessory Enclosed:
UNI flange 2"... 4"
Application limits

Take notice of range diagram

Measuring principle

Ultrasonic Limit
Characteristic / Application

Compact ultrasonic transmitter
Supply / Communication

2-wire
Ambient temperature

-20 °C...+60 °C,
(-4 °F...+140 °F)
Process temperature

-20 °C...+60 °C,
(-4 °F...+140 °F)
Process pressure / max. overpressure limit

0.7 bar...3 bar abs,
(10 psi ...44 psi)
Main wetted parts

PP/ EPDM
Process connection

G / NPT 1 1/2",
G / NPT 2"
Blocking distance

Sensor 1 1/2": 0.25 m,
Sensor 2": 0.35 m
Communication

4...20 mA
Certificates / Approvals

ATEX, CSA C/US, IEC Ex, NEPSI
Options

Accessory Enclosed:
UNI flange 2"...4"
Application limits

Take notice of range diagramm

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14/02/2014
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31/03/2011
16/02/2010

Language:	English
Version:	14/02/2014
File size:	2.1 MB
File name:	TI00440FEN_1514.pdf

	EN
14/02/2014
04/04/2012
16/02/2010

Language:	English
Version:	14/02/2014
File size:	3 MB
File name:	BA00387FEN_1414.pdf

	EN
14/02/2014
16/01/2013
31/03/2011
16/02/2010

	EN
01/12/2022

	EN
14/02/2014
04/11/2011
08/09/2011
16/02/2010

	EN
12/04/2012

	EN
12/04/2012

Ultrasonic measurementTime-of-FlightProsonic FMU30

Cost effective all-round instrument for level applications in liquids and bulk solids

Specs at a glance

Accuracy

Process temperature

Process pressure / max. overpressure limit

Max. measurement distance

Main wetted parts

Field of application

Benefits

Videos

Fundamental selection

Predecessor

Success stories

Smart hardware and cloud-based software increase efficiency

Level measurement of silos on construction sites

Time saved, safety increased

Basics of continuous level measurement

Measuring the level of bulk solids stored in silos

Measuring principle

Characteristic / Application

Supply / Communication

Accuracy

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Main wetted parts

Process connection

Blocking distance

Application

Max. measurement distance

Communication

Certificates / Approvals

Options

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

Application limits

Measuring principle

Characteristic / Application

Supply / Communication

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Main wetted parts

Process connection

Blocking distance

Communication

Certificates / Approvals

Options

Application limits

Measuring principle

Characteristic / Application

Supply / Communication

Ambient temperature

Process temperature

Process pressure / max. overpressure limit

Main wetted parts

Process connection

Blocking distance

Communication

Certificates / Approvals

Options

Application limits

Back

Ultrasonic Level Measurement

Prosonic T FMU30

Ultrasonic Level Measurement

Ultrasonic measurement
Time-of-Flight
Prosonic FMU30

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Online software
SupplyCare Hosting

Supply chain management
Online software
SupplyCare Hosting