Coriolis mass flow measuring
Development to the next level

1st Coriolis mass flow meter with OIML R139:2018

The Heinrichs TMU-W Coriolis mass flow meter not only conforms to, but surpasses by far all requirements of the “Organization International de Métrologie Légale ” in the OIML R139 2018 in terms of measuring accuracy at high pressure.

The Flowmeter for Hydrogen

Our product line TMU-W has been developed specifically for the fuelling of vehicles. Besides the OIML R 139 2018 certification the meter convinces of:

  • outstanding accuracy
  • robustness against vibrations
  • any installation position
  • compact design in fully welded stainless steel housing
  • 1000+ bar working pressure
  • OIML R139:2018 Approval
  • For hydrogen refueling stations acc. to SAE J2601

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Hydrogen as an ecological alternative

The human influence on the global climate has become increasingly obvious, for which the high energy needs of modern societies play a significant role. To counteract this development, environmentally friendly technologies must become more suitable for everyday use. Hydrogen, with its high efficiency but minimal impact on the environment, is the ideal ecological alternative to achieve this goal and is destined to play a special role in replacing fossil fuels energy fossil fuel energy sources.

Heinrichs has played an active role in the high-pressure hydrogen sector providing H2 vehicle dispenser measuring solutions for more than 10 years.

To achieve the necessary high energy density with elemental Hydrogen, the lightest of all elements, an appropriate compression is required. Pressures greater than 1000 bar as well the high permeability of hydrogen therefore pose the greatest technical challenges for the technology. Driven by our gained experience, the requirements of modern applications and the latest technological advances, Heinrichs has developed the new TMU-W product range, with a Coriolis architecture specially designed for high-pressure Hydrogen applications.

High Pressure Coriolis for H2

Futuristic design for future technology

For the development of the TMU-W the latest techniques in the simulation of structure and flow conditions were applied:

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

These techniques allow a precise virtual assessment of complex, coupled behaviours meaning the specific characteristics of H2 high pressure measurement can be addressed directly. The result was the rapid development of an optimised Coriolis sensor.

Transmitter

Suitable transmitter (UMC 4) is available in 2 versions:

Rack mount housing

for space saving installation in hydrogen dispensers

Industrial field housing

for harsh environments IP68

Details

Applications

The TMU-W was specially designed for use in hydrogen dispenser stations. As an all-rounder, it can just as well be utilised in high pressure applications of liquids offering a measurement accuracy of 0.1%

Reliability

During fueling process, extremely high zero point and long term stability are required. Its special design provides the highest possible stability and unrivaled measuring accuracy to the user. TMU-W meets the requirements of the worldwide standard SAE J2601 for hydrogen refueling stations.

Optimized for use in slim hydrogen dispensers of the latest state-of-the-art generation.

Special features
  • H2-application optimized
  • 1000+ bar working pressure
  • OIML R139:2018 approval
  • For hydrogen refueling stations acc. to SAE J2601
  • Compact and innovative design
  • any installation position
Technical data
  • Sensor: TMU-W
  • System: Coriolis
  • Measuring range:TMU-W004: max. 4 kg/min H2 (Pnom 1000 bar)
  • Accuracy:
    • Gas: ±0,5 % of reading ± zero point stability
    • Liquids: ± 0,1% of reading ± zero point stability
  • Wetted parts: 1.4571 (316 TI)
  • Secondary containment:1.4301 (304L)
  • Process connections:
    • 6MF 9/16-18 UNF
    • ½” NPT (IG) (optionally)
    • Hofer 7⁄8″ (optionally)
  • ATEX / IECEx Approval: II 1/2G Ex ia IIC T2…T6 Ga/Gb
  • Max. Process pressure: TMU-W004: 1000 bar (20°C)
  • Pressure loss @ Qmax.: TMU-W004: ~15 bar (max) (±10 %)
  • Process temperature: -40…+100°C (H2 Dispenser -40…+55°C)
  • Ambient Temperature: -40…+55°C
  • Ingress Protection: IP67 (EN60529)

Transmitter:

  • Model: UMC4
  • Power supply: 19…36 VDC
  • Outputs: galvanically isolated
    • Analogue: 2 x 4…20 mA HART®, passive
    • Pulse (or Frequency): passive, via Optocoupler as Frequency. Max. 1 KHz
    • Status: passive, via Optocoupler
      Option: Second pulse output (90° phase-shifted)
  • Ambient Temperature: -40…+55°C
  • Ingress Protection: IP68 (EN60529)
  • ATEX Approval:
    • Field housing: II 3(1)G Ex ec [ia Ga] IIC T6..T3 Gc
      (Protection class terminal compartment Ex d)
    • Rack mound housing: II 3G Ex ec [ia Ga] IIC T3-T4 Gc
      (Rack mound housing), Ambient up to 60°C
  • CE-Marking:
    • 2014/30/EU (EMC)
    • 2014/34/EU (ATEX)
    • 2014/35/EU (LVD)
    • 2014/68/EU (PED)
  • Communication: HART®
  • Approvals: OIML-CS R 139:2018

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