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Endress+Hauser factory tour series: Oil calibration of Singapore’s bunkering master meter

Stephan Natter, Principal Business Development Manager of Endress+Hauser Flow, explains to Manifold Times the importance of having an in-house oil calibration rig.

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EHFL Reinach customer visit Metcore Manifold Times MEKR042 MT

Manifold Times gained exclusive access into the mass flowmeter (MFM) production factory of Reinach-based Endress+Hauser Flow in Switzerland during February. This will be the third in a series of five articles produced offering behind-the-scenes glimpses of the intricate process on what goes into perfecting MFMs.

The following are key takeaways from the tour to understand more about the MFM calibration process:

The cornerstone is a particularly important reference point, setting the foundation of historical buildings, and ultimately determines the position of the entire structure. In similar significance, situated in a corner of Endress+Hauser Flow’s Reinach factory lies a particularly important facility – the metrological test centre with its calibration rigs for flow measurement using water and oil.

This oil calibration rig is the only one of its kind owned by an independent MFM manufacturer, and its responsibilities include performing the yearly calibration of Singapore’s only bunkering master mass flowmeter (MMFM) which the world’s largest bunkering port depends on.

EHFL Reinach Manifold Times Stephan Natter Calibration MEKR 026 MT

Stephan Natter, Principal Business Development Manager of Endress+Hauser Flow, was on location to explain the rig’s raison d’etre.

“You might have to question why we built such an oil calibration facility whose measurement can be directly traced back to the national standard,” Natter shared.

“By far not all MFM manufacturers have an oil calibration rig. Because common sense is that a MFM which is calibrated on water can be also used in oil, keeping the uncertainty limits given by the different custody transfer standards.

“However, under OIML R117 and API MPMS 4.5 a master MFM has to be three times more accurate than duty meters, calibrated on products equal to the final product measured at site and possess expanded measuring uncertainty of up to 0.067% verified by an independent notified body such as NMI Certin B.V.

“Every Coriolis MFM shows a measuring effect based on Reynolds number (a mathematical formula derived from combining density flow rate and viscosity). The higher the viscosity the higher the effect is on the measuring signal and this needs to be compensated. Every MFM of Endress+Hauser has a Reynolds number compensation built into its electronics.

“With the oil calibration rig, we have the possibility to fine tune the Reynolds number compensation for specific meters because every meter is a little bit different due to production tolerances. With this rig we are able then to make for example, the Metcore master meter perfect.”

Coincidentally, the master meter of Metcore , a Singapore-based Authorised Verifier and accredited certification body for MFM bunkering systems, was at Endress+Hauser Flow’s Reinach factory to perform its yearly calibration in accordance with ISO/IEC 17025.

EHFL Reinach customer visit Metcore Manifold Times MEKR023 MT

Since 1 November 2020, the master meter has been used for verification of duty MFMs installed on Singapore bunker tankers due for yearly re-validation.

Singapore bunkering industry players have regarded the master meter as a ‘game changer’ as it shortens the time and reduces resources, making it the most practical and efficient method of validating the duty MFMs performance.

The master MFM verification service operates on the principles of TR 80:2020 – Meter Verification using Master Mass Flow Meter; the standard guidelines stated the master MFM has to be three times better in terms of performance when compared to duty meters.

Darrick Pang, Managing Director of Metcore International Pte Ltd, commented:

“Meter verification using master meter provides the alternative option for the MFM users other than the regular meter re-calibration as it is more efficient, less costly and time-consuming process to monitor the measurement performance of the duty MFM over its metrological requirements.”

“It is under that notion that the master meter must be calibrated under the acclaimed ISO/IEC 17025 environment to ensure a high level of performance accuracy of the master meter needed for meter verification.”

Related: Endress+Hauser factory tour series: Transforming designs into reality
RelatedEndress+Hauser factory tour series: Finer points of MFM design, explained by R&D

 

Photo credit: Endress+Hauser
Published: 26 August 2024

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Genevos and Koedood Marine Group team up on maritime hydrogen fuel cell deployment

Collaboration will explore how ready-to-use marine fuel cell systems can support shipowners and shipyards in the transition towards zero-emission operations.

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Genevos and Koedood Marine Group team up on maritime hydrogen fuel cell deployment

Marine fuel cell systems provider Genevos recently said the company signed a Letter of Intent (LOI) with engine supplier Koedood Marine Group to explore the deployment of hydrogen fuel cell systems for inland and coastal maritime transport. 

The LOI was signed by Phil Sharp, co-founder and CTO of Genevos, and Mühlheim, Business Development Director of Koedood Marine Group during the 2026 Advanced Maritime Technology Show in Amsterdam.

Building on Koedood’s proven experience in hydrogen maritime projects – including its ongoing work with Mitsubishi Heavy Industries and TNO on hydrogen engine development – the collaboration will explore how ready-to-use marine fuel cell systems can support shipowners and shipyards in the transition towards zero-emission operations. 

“Koedood has a strong reputation in the maritime sector and a deep understanding of vessel operators’ needs. This LOI is an important step in exploring how Genevos’ hydrogen fuel cell systems can be deployed more widely across inland and maritime applications, helping shipowners reduce onboard emissions with robust, practical and scalable clean power solutions,” said Sharp.

The collaboration aligns with growing market demand for rapidly deployable hydrogen solutions and the wider need to accelerate the adoption of zero-emission technologies across the maritime sector. 

“With this collaboration, we are further strengthening our portfolio of maritime energy solutions. Together with Genevos, we are exploring how we can support our customers in the adoption of hydrogen technology,” said Mühlheim.

 

Photo credit: Genevos
Published: 20 July, 2026

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Wind-assisted

DNV awards TADC to Econowind for VentoFoil 3-Series

System actively harnesses wind power to generate forward thrust, helping to reduce bunker fuel consumption and mitigate FuelEU penalties.

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DNV awards TADC to Econowind for VentoFoil 3-Series

Dutch wind-assisted propulsion technology firm Econowind on Wednesday (15 July) said it has received a Type Approval Design Certificate (TADC) from classification society DNV for its VentoFoil 3-Series boundary layer suction wing. 

The company said the certification confirms compliance with DNV’s ST-0511 standard for Wind-Assisted Propulsion Systems and enables easier integration of VentoFoils on DNV-classed vessels worldwide. 

Econowind added that the approval accelerates the deployment of wind propulsion across the shipping industry.

“DNV is one of the world’s leading classification societies. This TADC gives DNV-classed shipowners confidence that VentoFoils meet the highest industry standards,” said Chiel de Leeuw, Chief Commercial Officer at Econowind. 

“It simplifies the approval process for both retrofits and newbuilds. VentoFoils are ideal for late-stage design integration and retrofit projects. This is an important milestone for Econowind and for the wider adoption of wind-assisted ship propulsion.”

The 3-Series VentoFoil is Econowind’s best-selling suction wing to date, with over 150 units sold. The system actively harnesses wind power to generate forward thrust, helping to reduce fuel consumption and mitigate FuelEU penalties. The system includes a tilting foundation, allowing the wings to be tilted down during port operations or in adverse weather conditions, making it a flexible solution.

The TADC applies to the 16-meter VentoFoil 3-Series product design and supports easy integration into DNV-classed vessels without repeating the full design assessment process. This enables shipowners, shipyards, and project teams to move more efficiently from concept to installation, reducing project complexity and accelerating deployment. 

Hasso Hoffmeister, Senior Principal Engineer at DNV Maritime, said: “It is a great pleasure to award Econowind this new certificate. WAPS have been going from strength to strength over the past few years, from 2022 the number of vessels in operation has increased five times, and we’ve now topped the century mark. 

“And with the current advances in technology, materials, and production capacity in the segment, we expect this to accelerate. So, while the wind always changes, the shipping industry is likely to be sailing strong for years to come.”

Econowind expects the DNV Type Approval Design Certificate to accelerate adoption of the VentoFoil, particularly among shipowners seeking proven, independently certified technology that can support fuel savings, emissions reductions, and decarbonization goals.

MS Heinz of HS Schiffahrt is among the first vessels to sail under this TADC.The company said the approval builds on Econowind’s growing installed base and further strengthens confidence in wind-assisted ship propulsion as a practical solution to address energy scarcity and high fuel prices. 

In addition to the 3-Series, Econowind offers the 5-Series for the deep-sea market.

 

Photo credit: Econowind
Published: 17 July, 2026

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Malaysia: Maharani Freeport to implement MFM and e-BDN technologies for enhanced bunkering transparency

Initiatives reflect the Freeport’s commitment to delivering transparency, operational integrity and international best practices across its bunkering ecosystem, says MEG spokesperson.

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MEG 1145 cropped MT

Maharani Freeport, a National Project officially launched by His Majesty Sultan Ibrahim, King of Malaysia, in November 2025, will be introducing mass flowmeter (MFM) and electronic bunker delivery note (e-BDN) technologies to its bunkering operations, learns Manifold Times.

These strategic initiatives underscore the port’s commitment in establishing a highly transparent, efficient and trustworthy bunkering environment, aligned with global best practices and addressing critical industry demands, according to a Maharani Energy Gateway (MEG) spokesperson.

MEG is the Master Developer of Maharani Freeport and seeks to position the Freeport as a strategic nexus for shipment, storage and trading operations on a global scale. MEG Synergy is the trading division and a wholly owned entity of MEG; it seeks to position Maharani Freeport as a strategic nexus for shipment, storage, and trading operations on a global scale.

As part of its long-term bunkering strategy, the Freeport is currently in the process of acquiring bunker vessels of various sizes to support marine fuel deliveries and accommodate the evolving requirements of regional and international customers. These vessels will be equipped with MFM technology to ensure accurate, transparent and efficient fuel transfer operations.

Including bunkering and ship-to-ship (STS) trading operations from its High Sulphur Fuel Oil (HSFO) Floating Storage Unit (FSU), MEG Synergy already oversees a healthy volume of Bunker cargo deliveries to regional players each month.

MFM for Trust, Transparency and Traceability

MEG highlighted the custody transfer of bunker fuels at the Freeport will be handled by MFM-equipped bunker tankers.

“The adoption of MFM technology to support bunkering operations is a direct response to persistent industry challenges such as quantity discrepancies and delivery disputes,” explained the spokesperson.

“By equipping our bunker vessels with certified mass flowmeters, we aim to ensure precise and verifiable fuel delivery measurements.

“This initiative is pivotal in fostering trust among customers and strengthening the Freeport’s reputation as a professionally managed zone where businesses can operate with confidence. The overarching goal is to create a secure and well-governed environment for commercial activities, reducing operational risks and uncertainties while supporting efficient and transparent trade.”

e-BDN to Digitalise Documentation Workflow

The implementation of electronic bunker delivery notes (e-BDN), together with MFM technology, further aligns with the Freeport’s focus on creating comprehensive digital custody transfer records and robust data retention systems, added the spokesperson.

This digital approach, integrated with MFM technology, will streamline operational workflows, reduce administrative burdens and provide an immutable record of transactions to enhance transparency, minimising potential friction and expediting dispute resolution

MEG emphasised that the Freeport’s commitment extends beyond technological enhancements to encompass a comprehensive governance framework.

The port aims to adhere to stringent international standards, including those established by the International Maritime Organization (IMO), while offering dispute resolution mechanisms under the International Chamber of Commerce (ICC) to ensure the swift and fair handling of disagreements.

This holistic approach to operational integrity and governance is designed to address perceived transparency gaps, positioning the Freeport as a reliable and commercially attractive hub for the maritime and commodities sectors.

Note: For enquiries in respect of Maharani Freeport, readers may reach out to:

[email protected]

Related: Interview: Maharani Energy Gateway – Forging a new energy nexus in the Straits of Malacca
Related: New Johor bunkering hub: Maharani debuts as Malaysia’s first duty-exempted energy freeport

 

Photo credit: Maharani Energy Gateway
Published: 15 July 2026

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