Methods
ASTM D924 ASTM D4052 ASTM D4054 ASTM D7826 IP 365 IP 638
The Stanhope-Seta JetDC is an automated, benchtop instrument, used to simultaneously determine the relative permittivity (dielectric constant), density and temperature of aviation turbine fuel and fuel containing synthesised hydrocarbons and synthetic blending components.
Sustainable Aviation Fuel (SAF) represents an important route to reduce global net CO2 emissions. SAF is produced through many different processes, using different feedstock such as used cooking oil, syngas, fats, vegetable oils, greases, sugars and alcohols. SAFs are approved for use through a standardised testing process.
The molecular make up of conventional aviation turbine fuel and SAF are not identical and there can be a difference in the dielectric constant, density, temperature relationship. This relationship is used by many aircraft gauging systems as part of the mechanism to determine how much fuel is on board the aircraft. As such capacitive fuel gauge accuracy relies on the dielectric constant properties to be similar across jet fuel batches.
