KROHNE_Whitepaper_Chemie

Hydrogen under pressure – Pressure measurement for an increasingly important element

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Hydrogen under pressure – Pressure measurement for an increasingly important element

Hydrogen has attracted interest among the wider public for some time. It is rapidly gaining in importance as
people search for alternatives to fossil fuels and raw materials free of CO2. And it is not just the steel,
cement and chemical industries that are already making
major efforts to replace substances such as coal, oil and
natural gas with hydrogen in their operations.There is no doubt that the use of hydrogen is set to significantly increase in industrial processes. However, in comparison with other fluids the chemical and physical properties of hydrogen make higher demands on the materials used in process technology. What this means for measuring technology – in particular for pressure measurement – and how industrial users can approach the issue is now the subject of this Whitepaper. 

Contents

  • The special characteristics of hydrogen
  • How industrial hydrogen comes into being
  • Pressure measurement for gases and liquids
    • Structure of a pressure transmitter and a diaphragm seal assembly
    • Importance of the diaphragm
    • What can be measured
  • Hydrogen in measuring technology
    • Diffusion into filling oil
    • Damage through embrittlement
    • The boundary conditions decide
  • Counter-measures – controlling hydrogen
  • The application determines the choice of device
  • Example of a hydrogen measurement application

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