Coriolis flowmeter TMU-W series

massfor liquidsfor hydrogen

Overview
The TMU-W Coriolis mass flow meter by Heinrichs Messtechnik GmbH is engineered for high-pressure hydrogen metering and other demanding high‑pressure applications. It is certified to OIML R139:2018 for measuring accuracy and is compatible with hydrogen refuelling requirements such as SAE J2601.

Highlights

• Optimized for H2 applications
• Process pressure up to and beyond 1000 bar (model-dependent)
• OIML R139:2018 certification
• Suitable for hydrogen refuelling according to SAE J2601
• Compact, fully welded stainless-steel housing
• Any mounting position

Product description
The TMU-W series provides precise mass flow measurement under high pressures with high stability and resistance to vibration. The sensor uses a Coriolis dual-pipe design and a welded stainless-steel construction suitable for harsh environments and varied installation positions.

Design & development techniques
Development relied on advanced simulation and analysis to ensure mechanical and metrological reliability under high-pressure hydrogen conditions:

• CSM (Computational Structural Mechanics)
• FEM (Finite Element Method)
• CFD (Computational Fluid Dynamics)
• CEM (Computational Electromagnetics)
• FSI (Fluid-Structure Interaction)
• TFSI (Thermal Fluid-Structure Interaction)

Applications
The TMU-W is intended for precise measurement in high-pressure environments and is particularly suited to:

• Hydrogen filling stations — designed for dispenser applications exceeding 1000 bar and compliant with SAE J2601
• High-pressure industrial processes — oil & gas, chemical processing requiring accurate mass flow data
• Oil & gas industry — measurement of crude, natural gas and refined products in upstream/midstream/downstream
• Chemical processing — corrosion-resistant materials and high-pressure capability for aggressive media
• Research & development — high-pressure testing and experiments

Special features
Key features for hydrogen and high-pressure use include:

• OIML R139:2018 approval for metrological performance
• Working pressures above 1000 bar for selected models
• Compact, fully welded 316Ti wetted construction with secondary containment
• High vibration tolerance and multi-position installation
• Use of advanced simulation methods to ensure long-term stability and accuracy

Technical data (summary)

• Sensor: TMU-W
• System: Coriolis dual-pipe design
• Measuring range: TMU-W004: max. 4 kg/min H2 (PNom 1000 bar); TMU-W006: max. 16 kg/min H2 (PNom 500 bar)
• Accuracy: Liquids: ±0.1% of reading ± zero point stability; Gas: ±0.5% of reading ± zero point stability
• Wetted parts: 1.4571 (316 Ti)
• Secondary containment: 1.4301 (304L)
• Process connections: 6MF 9/16-18 UNF; optional ½” NPT; optional Hofer 7/8″
• Max. process pressure: TMU-W004: 1000 bar (20°C); TMU-W006: 500 bar (20°C)
• Pressure loss @ Qmax (TMU-W004): ~15 bar (±10%)
• Process temperature: -40 … +100 °C (H2 Dispenser -40 … +55 °C)
• Ambient temperature: -40 … +55 °C
• Ingress protection (sensor): IP67 (EN60529); transmitter: IP68
• Certificates & approvals: ATEX / IECEx II 1/2G Ex ia IIC T2…T6 Ga/Gb; NEPSI Ex ia IIC T2…T6 Ga/Gb; OIML R139:2018
• Transmitter model: UMC4-RM; supply 19…36 VDC; outputs: 2 x 4…20 mA HART® (galvanically isolated, passive), pulse/frequency (passive, max 1 kHz), status via optocoupler
• CE: 2014/30/EU, 2014/34/EU, 2014/35/EU, 2014/68/EU
• Communication: HART®

Notes
Select the TMU-W variant according to nominal pressure and required flow range. Contact Heinrichs Messtechnik GmbH for detailed datasheets, certificates and configuration options.