Name: Prosonic S FMU90
Brand: Endress+Hauser
Availability: InStock

Ultrasonic measurement Time-of-Flight Prosonic FMU90

Phase out

Product is getting phased out

Phase out Product status

Ultrasonic measurement Time-of-Flight Prosonic FMU90

New alternatives available

Successor

FlexView FMA90

Phase out policy
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Phase out policy

Endress+Hauser are committed to the long term support of all our products

We undertake support and service for our products for a period of ten years after notice of product withdrawal (until spareparts are not available any more)

However we reserve us the right to offer alternative solutions including replacement products if deemed more appropriated.

Product status

Product root FMU90

Name Ultrasonic measurement Time-of-Flight Prosonic FMU90

Product status In phase out

Phase out date 6/2026

Order stop 3/2027

Spare sensor until not applicable

Calibration until not applicable

Spares available 3/2031

Repair until not applicable

New alternative FMA90

Maintenance advice

Transmitter in housing for field or top hat rail mounting for up to 2 sensors FDU90/91/92/93/95

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Time-of-Flight measuring principle

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Ultrasonic measurement Time-of-Flight Prosonic FMU90

Phase out

Transmitter in housing for field or top hat rail mounting for up to 2 sensors FDU90/91/92/93/95

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Successors

FlexView FMA90

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FlexView FMA90

Seamless integration with modern connectivity and dual sensor support for a wide range of applications

Benefits

Simple, menu-guided operation with 6-line plain text display, 15 languages selectable
Envelope curves on the display for quick and simple diagnosis
Easy operation, diagnosis and measuring point documentation with the supplied "FieldCare" operating program
Time-of-Flight correction via integrated or external temperature sensors
Linearisation (up to 32 points, freely configurable) for the most common flumes and weirs  pre-programmed and selectable
Online calculation of the flume-/weir-flows via integrated flow curves
Automatic detection of the sensors FDU9x

Services and resources

Product Support Product documentation, troubleshooting articles, device details and more.

FLEXible answers to individual needs

Current product

Ultrasonic measurement Time-of-Flight Prosonic FMU90

Specialized products
Designed for demanding applications

What is FLEX?

FLEX selections

Technical excellence

Simplicity

Fundamental selection Meet your basic measurement needs

Lean selection Handle your core processes easily

Extended selection Optimize your processes with innovative technologies

Xpert selection Master your most challenging applications

Variable

Learn more about the FLEX selections

Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

Learn more

Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

Learn more

24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

Have questions about this product?

Spare parts and accessories

Housing/housing accessories

Housing DIN Rail FMU9x

Housing/housing accessories

Order code 52025713

Drawing number 10

Housing/housing accessories

Mounting plate FMU9x field housing,PC

Housing/housing accessories

Order code 52025695

Drawing number 11

Housing/housing accessories

Separating web + fixing PC board

Housing/housing accessories

Order code 52025702

Drawing number 12

Housing/housing accessories

Blind cover PC board, 7 pieces

Housing/housing accessories

Order code 52025712

Drawing number 13

Spare parts and accessories

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Ultrasonic - Prosonic FMU90

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CAD Drawings

Configuration support

Spare parts and accessories

Housing/housing accessories

Housing DIN Rail FMU9x

Housing/housing accessories

Order code 52025713

Drawing number 10

Housing/housing accessories

Mounting plate FMU9x field housing,PC

Housing/housing accessories

Order code 52025695

Drawing number 11

Housing/housing accessories

Separating web + fixing PC board

Housing/housing accessories

Order code 52025702

Drawing number 12

Housing/housing accessories

Blind cover PC board, 7 pieces

Housing/housing accessories

Order code 52025712

Drawing number 13

Spare parts and accessories

Measuring principle	Ultrasonic
Characteristic / Application	Separated version with Field housing or top hat rail housing for control cabinet instrumentation, up to 6 relays for pump / rake / limit control, 1 or 2 channel version
Specialities	Protection Class IP 66 / NEMA 4x automatic sensor recognition of FDU9x sensors option: flow measurement for open channel and weirs or additional pump control functions
Supply / Communication	90 ... 253 VAC 10.5 ... 32 VDC up to 2x 4...20mA HART Profibus DP
Accuracy	+/- 2mm + 0.17% of measured distance
Ambient temperature	-40 °C ... 60 °C (-40 °F ... 140 °F)
Communication	up to 2x 4 ... 20 mA HART Profibus DP
Certificates / Approvals	ATEX, CSA
Options	Illuminated display, 6 line graphic display with country specific menu guidance, on-site diagnosis with envelope curve on display
Components	Sensors FDU9x
Measuring principle	Ultrasonic
Characteristic / Application	Separated version with Field housing or top hat rail housing for control cabinet instrumentation, up to 6 relays for limit control, 1 or 2 channel version
Specialities	Protection Class IP 66 / NEMA 4x automatic sensor recognition of FDU9x sensors
Supply / Communication	90 ... 253 VAC 10.5 ... 32 VDC up to 2x 4...20mA HART Profibus DP
Accuracy	+/- 2mm + 0.17% of measured distance
Ambient temperature	-40 °C ... 60 °C (-4 °F ... 140 °F)
Communication	up to 2x 4 ... 20 mA HART Profibus DP
Certificates / Approvals	ATEX, CSA
Options	Illuminated display, 6 line graphic display with country specific menu guidance, on-site diagnosis with envelope curve on display
Components	Sensors FDU9x
Measuring principle	Ultrasonic
Product headline	Separated version with field housing or top hat rail housing for control cabinet instrumentation, up to 6 relays for tendency alarm, flow pulse output or backwater / sludge alarm, 1 or 2 channel version
Sensor features	pre-programed flow curves for typical open channel measurement
Degree of protection	IP66 (Fieldhousing) IP20 (top hat rail housing)
Display/Operation	Illuminated display, 6 line graphic display with country specific menu guidance, on-site diagnosis with envelope curve on display
Outputs	4...20mA HART Optional: second 4...20 mA output (e.g. for 2 times flow measurement 1 relay (standard) Optional: 3 or 6 relays
Inputs	up to 2 FDU9x sensors
Digital communication	HART, Profibus DP
Hazardous area approvals	FMU allowed to operate FDU9x in Ex-zone

Product is getting phased out

New alternatives available

Phase out policy

Product status

Ultrasonic measurement Time-of-Flight Prosonic FMU90

Phase out

Ultrasonic measurement Time-of-Flight Prosonic FMU90

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Product is getting phased out

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Ultrasonic measurement Time-of-Flight Prosonic FMU90 Phase out

Ultrasonic measurement Time-of-Flight Prosonic FMU90

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Spare parts and accessories

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Ultrasonic measurement Time-of-Flight Prosonic FMU90

Phase out