Measuring hydrogen-enriched fuel gases

Reducing carbon dioxide (CO₂) production by replacing fossil fuels with renewable resources is now a global target. One step towards decarbonising gas networks is to enrich natural gas with up to 20% hydrogen, and trials such as HyDeploy and HyNet are demonstrating that this is a viable option.

EffecTech now offers calibration gas mixtures for hydrogen-enriched fuel gas mixtures for up to 20% hydrogen. In addition, EffecTech’s full range of performance evaluations and inspections are suitable for instruments measuring fuel gases enriched with hydrogen.

**Calibration gases for hydrogen-enriched fuel gases**

Calibration gases accredited to ISO 17034 and ISO 17025 for fuel gases containing up to 20% hydrogen.

Representation of H2 molecules — **Performance evaluations and inspections for hydrogen-enriched fuel gases**

Performance evaluations and inspections for GC and other instruments measuring up to 20% hydrogen

Component	range	calibration and measurement capability (CMC)*
	amount fraction (% mol/mol)	amount fraction (% mol/mol)
hydrogen	0.1 to 20	0.25 % relative + 0.0020
nitrogen	0.1 to 12	0.25 % relative + 0.0005
carbon dioxide	0.1 to 8	0.2 % relative + 0.0002
methane	35 to 100	0.11 – 0.10 % relative
ethane	0.1 to 20	0.25 % relative + 0.0005
propane	0.1 to 8	0.3 % relative + 0.0001
iso-butane	0.02 to 0.15 0.15 to 1.2	0.00045 0.3 % relative
n-butane	0.02 to 0.15 0.15 to 1.2	0.00045 0.3 % relative
neo-pentane	0.01 to 0.35	0.7 % relative + 0.0001
iso-pentane	0.01 to 0.35	0.5 % relative + 0.0001
n-pentane	0.01 to 0.35	0.5 % relative + 0.0001
n-hexane	0.001 to 0.35	1.0 % relative + 0.0001
2-methylpentane	0.001 to 0.35	1.3 % relative + 0.00005
3-methylpentane	0.001 to 0.35	1.3 % relative + 0.00005
2,2-dimethylbutane	0.001 to 0.35	1.3 % relative + 0.00005
benzene	0.001 to 0.2	1.3 % relative + 0.00005
cyclohexane	0.001 to 0.2	1.3 % relative + 0.00005
n-heptane	0.001 to 0.2	1.3 % relative + 0.00005
toluene	0.001 to 0.1	1.3 % relative + 0.00005
methylcyclohexane	0.001 to 0.1	1.3 % relative + 0.00005
n-octane	0.0005 to 0.05	1.3 % relative + 0.00005
n-nonane	0.0005 to 0.02	1.3 % relative + 0.00005
n-decane	0.0005 to 0.005	1.3 % relative + 0.00005
	amount fraction (µmol/mol or % mol/mol)	amount fraction (% µmol/mol)
oxygen	10 to 100 100 to 1000 0.1 % to 1.0 % 1.0 % to 22.5 %**	1.6 % relative + 0.1 0.9 % relative + 0.5 0.7 % relative + 1.0 0.18 % relative + 30

Measuring hydrogen-enriched fuel gases

ISO 17034 and ISO 17025 table of ranges and uncertainties for hydrogen-enriched fuel gases

Accreditations

ISO 17034 and ISO 17025 table of ranges and uncertainties for hydrogen-enriched fuel gases

ISO 17034 and ISO 17025 table of ranges and uncertainties for hydrogen-enriched fuel gases