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FLOWSIC900 ultrasonic flowmeter
New

Custody transfer ultrasonic LNG meter

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FLOWSIC900 ultrasonic flowmeter
New

Custody transfer ultrasonic LNG meter

Benefits

FLEXible answers to individual needs
Current product

FLOWSIC900 ultrasonic flowmeter

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  • Specialized products
  • Designed for demanding applications

What is FLEX?

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

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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.

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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.

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Product information

Specifications
Measuring / Application task Liquified Natural Gas (LNG)
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Description

FLOWSIC900 is the result of our many years of experience in natural gas measurement: a flowmeter specially tailored to the requirements of the LNG industry. It offers the required custody transfer accuracy for volume flow measurement and meets highest metrological standards. With FLOWSIC900 and the proven products FLOWSIC600-XT and FLOWSIC100 Flare-XT, we offer high-end measurement solutions from a single source to bring measurement performance and reliability in LNG plants to a new level.

Field of application
  • Custody transfer measurement of LNG
  • On- and offshore applications
  • Liquefaction, transport and storage of LNG


Device properties:

  • Intrinsically safe and reliable ultrasonic transducers
  • Conform to OIML R117 Cl. 0.3 and API MPMS Ch. 5.8
  • Real time measurement and diagnostics
  • Full bore design without pressure drop or need for flow conditioner
  • Factory thermal pre-insulation
  • Remote Signal Processing Unit
Benefits
Downloads
Most downloaded
Operating Instruction (BA)
FLOWSIC900 Flow meter
English version - 06/2025
Download
Metrology
Product family: FLOWSIC, FLOWSIC900 Product root: IFL900-
Region: International
Approval agency: NMi Certin
Approval number: R117/2019-A-NL1-24.05 rev. 02
Metrology type: Metrology
English version - 09/2025
Download
Operating Instruction (BA)
FLOWgate™ – Software Manual The FLOWgate™ software provides a user-friendly access to
measurement data, configuration, and diagnostic of the flow meter.
The software supports i-diagnostics™ features for FLOWSIC gas meters.
English version - 03/2025
Download
All downloads
26 Downloads
Operating Instruction (BA)
FLOWgate™ – Software Manual The FLOWgate™ software provides a user-friendly access to
measurement data, configuration, and diagnostic of the flow meter.
The software supports i-diagnostics™ features for FLOWSIC gas meters.
English version - 03/2025
Download
Operating Instruction (BA)
Most downloaded
FLOWSIC900 Flow meter
English version - 06/2025
Download
Short Instruction (KA)
CDUSB100 Connection device for commissioning and service
English version - 08/2025
Download
Short Instruction (KA)
FLOWgate™ – Quickstart Installation of FLOWgate™
English version - 03/2025
Download
Short Instruction (KA)
CID100 Display Unit
English version - 02/2025
Download
Short Instruction (KA)
CDBT100 Connection device for commissioning and service
English version - 02/2025
Download
Special Documentation (SD)
FLOWSIC900 Technical Bulletin MODBUS interface V1.4.0
English version - 02/2025
Download
Competence Brochure (CP)
FLOWSIC流量メータと流量測定機器 精密な計量— 正確な請求とプロセス制御のために
Japanese version - 09/2025
Download
Competence Brochure (CP)
FLOWSIC Flow Meters and Instruments Precise quantity measurement – for accurate billing and process control
English version - 05/2026
Download
Competence Brochure (CP)
MISURATORI E STRUMENTI PER LA PORTATA FLOWSIC MISURATORI E STRUMENTI PER
LA PORTATA FLOWSIC
Misura precisa delle quantità –
fatturazione precisa e controllo di
processo
Italian version - 05/2025
Download
Innovation (IN)
FLOWSIC900 – custody transfer ultrasonic LNG-Meter Ultrasonic technology for the custody transfer measurement
of liquefied natural gas
English version - 02/2026
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC610, FLOWSIC900 Product root: IFL610-, IFL900-
Region: Europe
Approval agency: CSA
Protection: Ex d
English version - 01/2026
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC550, FLOWSIC610, FLOWSIC900 Product root: IFL550-, IFL610-, IFL900-
Region: Europe
Approval agency: CSA
Protection: Ex i
English version - 08/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC550, FLOWSIC900 Product root: IFL550-, IFL900-
Region: International (IECEx)
Approval agency: CSA
Protection: Ex i
English version - 08/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC610, FLOWSIC900 Product root: IFL610-, IFL900-
Region: Canada/USA
Approval agency: CSA
Protection: Cl. I Div. 1, Cl. I Zone 0, Ex i
English version - 09/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC900 Product root: IFL900-
Region: Canada/USA
Approval agency: CSA
Protection: Ex d, Ex i
English version - 08/2026
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC610, FLOWSIC900 Product root: IFL610-, IFL900-
Region: Europe
Approval agency: CSA
Protection: Ex i
English version - 09/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC610, FLOWSIC900 Product root: IFL610-, IFL900-
Region: International (IECEx)
Approval agency: CSA
Protection: Ex i
English version - 09/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC550, FLOWSIC610, FLOWSIC900 Product root: IFL550-, IFL610-, IFL900-
Region: Europe
Approval agency: CSA
Protection: Ex i
English version - 09/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC610, FLOWSIC900 Product root: IFL610-, IFL900-
Region: International (IECEx)
Approval agency: CSA
Protection: Ex d
English version - 03/2026
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC550, FLOWSIC610, FLOWSIC900 Product root: IFL550-, IFL610-, IFL900-
Region: International (IECEx)
Approval agency: CSA
Protection: Ex i
English version - 09/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC550, FLOWSIC610, FLOWSIC900 Product root: IFL550-, IFL610-, IFL900-
Region: Canada/USA
Approval agency: CSA
Protection: Ex i
English version - 09/2025
Download
Explosion Protection
Product family: FLOWSIC, FLOWSIC550, FLOWSIC610, FLOWSIC900 Product root: IFL550-, IFL610-, IFL900-
Region: Canada/USA
Approval agency: CSA
Protection: Ex i
English version - 09/2025
Download
Metrology
Most downloaded
Product family: FLOWSIC, FLOWSIC900 Product root: IFL900-
Region: International
Approval agency: NMi Certin
Approval number: R117/2019-A-NL1-24.05 rev. 02
Metrology type: Metrology
English version - 09/2025
Download

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Spare parts and accessories

further parts
further parts

CONNECTION DEVICE BLUETOOTH

further parts
further parts
Order code 2131493
further parts
further parts

BATTERY B-03

further parts
further parts
Order code 6079597
further parts
further parts

BATTERY HB-03

further parts
further parts
Order code 6079598
further parts
further parts

BATTERY HB-03D

further parts
further parts
Order code 6079599
Spare parts and accessories