product picture of the ultrasonic flowmeter FLOWSIC900

FLOWSIC900
ultrasonic flowmeter

Custody transfer ultrasonic LNG meter

IFL900

Specs at a glance

Measured variables

Volume a. c., volumetric flow a. c., Fluid velocity, Speed of sound
Measuring Medium

LNG (Liquefied Natural Gas)
Nominal pipe size

8 ″ ... 36 ″
DN200 ... DN900, Schedule 40S/STD acc. ASME B36.19 / B36.10, others on request

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Field of application

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.

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

Low measurement uncertainty directly at custody transfer point reducing financial risks during LNG-transaction
Increased transparency during LNG transaction by dynamic & real-time measurement &
diagnostics
Operational expenditure savings by reduced boil-off gas losses and efficient LNG transfer due to minimized pressure drop
Capital expenditure savings by simpliefied meter integration and installation due to compact design and factory pre-insulation
Easy and fast access during commissioning and regular checks with remote SPU and FLOWgate™

Videos

Custody transfer ultrasonic LNG metering with FLOWSIC900

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Success stories

Inline gas ultrasonic flowmeter improves company's process

How one Permian oil company improved its process efficiency with an inline gas ultrasonic flowmeter
Read the full story
Real-time analysis of mature oil wells

GPsol, together with Endress+Hauser, developed a system that individually measures each component of extraction wells and provides as much information as possible about the current flow.
GPsol Wellchecker on a pumpjack
Reliable calibration using hydrocarbons

On the new factory calibration rig from Endress+Hauser, Wintershall Dea can now calibrate Promass F with hydrocarbons as legally mandated – a significantly cheaper option than on-site calibration.
Read the full story
Corrosion and Abrasion Monitoring for Predictive Maintenance

Avoidance of unintended plant shut down with early detection of corrosion and abrasion
Read the full story
How do you determine when to calibrate a flowmeter?

Understanding when and why your flowmeters need to be calibrated
Read the full story

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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Most downloaded

Competence Brochure (CP)

FLOWSIC Flow Meters and Instruments

English version - 05/2026

New version available in English

Precise quantity measurement – for accurate billing and process control

Show details Hide details

Language:	English
Version:	01/05/2026
File size:	3.1 MB
File name:	8030079_CP_Flow_meters_en_V3-0_2026.05_EHS_WEB.pdf

Operating Instruction (BA)

FLOWSIC900

English version - 06/2025

New version available in English

Flow meter

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	EN
01/06/2025

Language:	English
Version:	01/06/2025
File size:	4.6 MB
File name:	8029778_1SNC_OI_FLOWSIC900_en_V2-0_2025-06_EHS.pdf

26 documents

Operating Instruction (BA)

FLOWgate™ – Software Manual

Operating Instruction (BA)

English version - 03/2025

New version available in English

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.

Select other languages, versions and see details Hide selection and details

	EN
01/03/2025

Language:	English
Version:	01/03/2025
File size:	1.6 MB
File name:	8030458_AE00_OI_FLOWgate_en_V1-5_2025-03_EHS.pdf

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Operating Instruction (BA)

FLOWSIC900

Operating Instruction (BA)

English version - 06/2025

New version available in English

Flow meter

Select other languages, versions and see details Hide selection and details

	EN
01/06/2025

Language:	English
Version:	01/06/2025
File size:	4.6 MB
File name:	8029778_1SNC_OI_FLOWSIC900_en_V2-0_2025-06_EHS.pdf

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Short Instruction (KA)

CDUSB100

Short Instruction (KA)

English version - 08/2025

New version available in English

Connection device for commissioning and service

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Language:	English
Version:	01/08/2025
File size:	1.6 MB
File name:	8029508_AE00_KA_CDUSB100_en_V1-2_2025.08_EHS_WEB.pdf

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Short Instruction (KA)

FLOWgate™ – Quickstart

Short Instruction (KA)

English version - 03/2025

New version available in English

Installation of FLOWgate™

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Language:	English
Version:	01/03/2025
File size:	327.3 KB
File name:	8030460_AE00_KA_FLOWgate_Installation_en_V1-4_2025-03_EHS.pdf

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Short Instruction (KA)

CID100

Short Instruction (KA)

English version - 02/2025

New version available in English

Display Unit

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Language:	English
Version:	01/02/2025
File size:	1.6 MB
File name:	8030815_AE00_KA_CID100_en_V1-0_2025.02_EHS_WEB.pdf

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Short Instruction (KA)

CDBT100

Short Instruction (KA)

English version - 02/2025

New version available in English

Connection device for commissioning and service

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Language:	English
Version:	01/02/2025
File size:	1.5 MB
File name:	8029783_AE00_KA_CDBT100_en_V2-1_2025.02_EHS_WEB.pdf

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Special Documentation (SD)

FLOWSIC900 Technical Bulletin

Special Documentation (SD)

English version - 02/2025

New version available in English

MODBUS interface V1.4.0

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Language:	English
Version:	01/02/2025
File size:	606.1 KB
File name:	9413703_AE00_SD_FLOWSIC900_TechBulletin_en_V1-4_2025-02_EHS.pdf

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Competence Brochure (CP)

FLOWSIC流量メータと流量測定機器

Competence Brochure (CP)

Japanese version - 09/2025

New version available in English

精密な計量— 正確な請求とプロセス制御のために

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Language:	Japanese
Version:	27/09/2025
File size:	1.9 MB
File name:	CP01584DJA_0225_0226_Flowsic_flow_meters.pdf

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Competence Brochure (CP)

FLOWSIC Flow Meters and Instruments

Competence Brochure (CP)

English version - 05/2026

New version available in English

Precise quantity measurement – for accurate billing and process control

Show details Hide details

Language:	English
Version:	01/05/2026
File size:	3.1 MB
File name:	8030079_CP_Flow_meters_en_V3-0_2026.05_EHS_WEB.pdf

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Competence Brochure (CP)

MISURATORI E STRUMENTI PER LA PORTATA FLOWSIC

Competence Brochure (CP)

Italian version - 05/2025

New version available in English

MISURATORI E STRUMENTI PER
LA PORTATA FLOWSIC
Misura precisa delle quantità –
fatturazione precisa e controllo di
processo

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Language:	Italian
Version:	27/05/2025
File size:	6.1 MB
File name:	CP01584D16IT_02.25-00.pdf

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FLOWSIC900 ultrasonic flowmeter

Custody transfer ultrasonic LNG meter

Specs at a glance

Measured variables

Measuring Medium

Nominal pipe size

Field of application

Benefits

Videos

Success stories

Inline gas ultrasonic flowmeter improves company's process

Real-time analysis of mature oil wells

Reliable calibration using hydrocarbons

Corrosion and Abrasion Monitoring for Predictive Maintenance

How do you determine when to calibrate a flowmeter?

Measuring principle

Measured variables

Measuring Medium

Repeatability

Accuracy

Operating pressure range

Nominal pipe size

Metrological approvals and certificates

Hazardous area approvals

Digital Outputs

Digital communication

Back

FLOWSIC Flow Meters and Instruments

FLOWSIC900

FLOWgate™ – Software Manual

FLOWSIC900

CDUSB100

FLOWgate™ – Quickstart

CID100

CDBT100

FLOWSIC900 Technical Bulletin

FLOWSIC流量メータと流量測定機器

FLOWSIC Flow Meters and Instruments

MISURATORI E STRUMENTI PER LA PORTATA FLOWSIC

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FLOWSIC900
ultrasonic flowmeter