Instrumentation and gas analysis for hydrogen

Measuring instruments and gas analyzers
for the hydrogen industry

Fuji Electric measuring instruments
support professionals in the
hydrogen industry during each phase
of their production process in order to:

Reduce production cost
Increase yields
Extend the service life of installations
Guarantee the quality of the finished product

Hydrogen

New generation energy system based on electricity and hydrogen.
Hydrogen and electricity are convertible to each other. It is expected to establish an environmentally friendly energy cycle by using them.
Hydrogen energy characteristics.

Exists everywhere on earth
Generates water only when burnt
Offers great power while unlikely to spontaneously ignite
Serves as an energy storage medium
Quick diffusion when wet

Hydrogen production


	Production method	Raw materials	Energy	Features	Description	Instruments
Conventional technology	Steam reforming	Water Methane	Heat	Cheapest method, account for 90% of world's H2 production, emits CO2	Hydrocarbon and water vapor are heated in the presence of catalyst. H2 or mixture of CO and H2 is obtained. Light hydrocarbons such as methane, LPG, naphtha are used as raw materials. These materials needs to be desulfurized before use.	Pressure sensor Flow meter Temperature transmitter
Conventional technology	Electrolysis	Water	Electricity	Used in the area where electricity is inexpensive (PV, wind power, etc.)	Electrolysis is no longer used in Japan because hydrogen production from fossil fuel is much more cheaper.
Conventional technology	Byproduct hydrogen Steelworks Soda industry	Coal Sea water	Heat Electricity	Supplies H2 for fuel cell, vehicles enough up to 2020-2030	Hydrogen obtained as byproduct in manufacturing processes of steel, caustic soda, etc	Pressure sensor Flowmeter Temperature transmitter
Future technologies	Coal gasification	Coal Water	Heat (fossil fuel)	High-density H2 Low-quality coal waste	Carbon injected into a furnace reacts with O2 in the air to be CO2 and/or CO, or reacts with water vapor to be CO and H2. The obtained CO goes through reaction with water vapor, it is dissolved into CO2 and H2. CO + H2O -> CO2 + H2	Temperature transmitter Oxygen analyser Pressure sensor
Future technologies	Thermochemical, biomass gasification, photolysis, etc.	Water	Heat, electricity, solar (renewable energy)	Use of natural energy Low-density	Thermochemical: dissolves water by using heat or water vapor generated from power generation process. Photolysis: dissolve water via catalyst and sunlight.	Temperature transmitter Pressure sensor Flow meter

Hydrogen pressure measurement

Coating for prevention of hydrogen diffusion in the measurement cell (hydrogen sulphide) : Gold and Ceramic

For certain configurations, the process fluids generate hydrogen atoms that may be diffused through the metal diaphragm.
The contamination of the oil associated with this diffusion degrades the transmitter’s measurement accuracy and life time.
Thanks to our unique gold and ceramic double-coating diaphragm, the hydrogen’s permeation is stopped.
In this configuration, the transmitters may be used in sulphur reduction installations, hydrogen production units, oil refineries and putrefaction mud treatment works.