Analytical Instrumentation Grabner distillation method included in ASTM specifi cations for diesel and jet fuels
Vienna, Austria – January 8th, 2019. AMETEK Grabner Instruments distillation method has been included in ASTM specifi cations for diesel and jet fuels. The recognition of the Grabner mini method as alternative to the traditional distillation test method D86 gives a competitive edge to petroleum refi neries, the automotive and the aviation industry: measuring time and sample waste is reduced, while measurement precision and safety in the lab is increased.
The mini method ASTM D7344 was designed in 2007 by Grabner Instruments, a subsidiary of AMETEK Inc. In 2017 a revision of the method was released: based on the results of a large interlaboratory study, precision of the ASTM D7344 method was found to be comparable or better than the precision of the classical D86 method. As a result, ASTM D02 committee voted to accept the Grabner method as alternative distillation method for ASTM D975 Diesel and ASTM D1655 jet fuel specifi cations.
The benefi ts of the new design go beyond improved repeatability und reproducibility. D7344 requires only 6 mL sample for true atmospheric distillation measurements. Paired with the automatic fi lling and dosing systems of Grabner’s D7344 MINIDIS ADXpert distillation apparatus, the small sample also promotes a faster analysis. Distillation runs on D7344 MINIDIS ADXpert typically take less than 30 minutes and thus are a lot faster than tests with other distillation apparatus. The analyzer is portable and the small sample plus the sealed distillation cycle eliminate the risk of fi re and the need for a fi re extinguisher during distillation runs.
Petrochemical, mining and aviation companies profi t greatly from the automatic heater regulation of the D7344 analyzers, because they often test problematic samples that do not distill well under D86. “We have purchased Grabner D7344 MINIDIS as an alternative to traditional D86 distillation units. It has proven its performance and reliability in our lab. Easy to use with automated sample handling, low maintenance costs, using only little space on our lab bench: My staff loves the MINIDIS!”, says Jim Koscielniak, manager at Plains All American Pipeline.
Grabner Instruments’ success is based on the development of portable, rugged and easy-to-operate fuel and oil analyzers for accurate quality control in the laboratory as well as for fast on-site tests in mobile lab facilities. For more information about MINIDIS ADXpert and other analytical instruments, visit Grabner’s website:
www.grabner-instruments.com
For More Info, email: email:
Grabner Instruments supports Ford Motor Company product development for Asia-Pacifi c and African vehicle markets
For More Info, email: email:
The Ford Motor Company uses analysers from Grabner Instruments to help guarantee vehicle performance. Engineers at the Ford research and development center in Nanjing, China, rely on the MINISCAN IRXpert fuel analyser from Grabner to assess the responses of engines under extreme operating conditions, including temperature, pressure and altitude.
Grabner Instruments, a subsidiary of AMETEK Inc., is a renowned manufacturer of petroleum testing equipment. It released the IROX, the fi rst completely portable fuel analyser, in 1994. That instrument was succeeded by the MINISCAN IRXpert in 2011 and the MINISCAN IR Vision in 2017.
The MINISCAN IR Vision fuel analyser uses Fourier-transform infrared (FTIR) spectroscopy to determine more than 100 components and properties of gasoline, jet and diesel fuels. The compact, versatile instrument weighs 12 kilograms and comes in a rugged carrying case. Its pre-loaded database includes more than 2000 fuels that have been measured in accordance with ASTM and EN standards worldwide. Thanks to its germanium-coated, potassium bromide (Ge/KBr) beam splitter, the MINISCAN IR Vision achieves excellent measuring precision. The beam splitter offers better optical transmission than splitters on other FTIR analysers on the market that use zinc-selenide (ZnSe). The Grabner fuel analyser’s optical resolution of 3.8 cm-1 many competing instruments.
also is better than that offered by
The portability of Grabner’s analysers was a critical factor for the Ford Nanjing Test Center, which performs tests during product development. The center supports the development of vehicle models intended for the Asia-Pacifi c and African markets.
Completely adaptable fi eld tests are very important for China. Monitoring performance under different environmental conditions helps to ensure that a motor will behave the same way when used in cities, such as Turpan and Hainan that are known for scorching temperatures, or around Heihe and Qinghai Golmud that have milder weather. The engine performance is related to the composition of the fuel, which varies from one region to the other. Engines must be robust and capable of starting and running smoothly using different fuel blends.
The Asia-Pacifi c market presents additional challenges because the fuel standards it uses are local and unique. If cars are manufactured for Western countries, but are subsequently sold to China, differences in Chinese fuel composition may lead to problems with a motor’s cylinders. Therefore, Ford’s research at its Nanjing Test Center is analysing the anti-knock rating of Chinese gasoline and diesel fuels. Typically, a high octane rating is preferred, because high octane fuels can handle higher compression before ignition. That helps to reduce the risk of prematurely igniting fuel in the motor by the heat of compression, rather than the spark from the spark plug. This pre-combustion generates both ultra-high temperature and pressure, which can cause failure of a motor’s spark plug and cylinders. A high octane rating also increases acceleration and improves the engine’s response, when operating on uneven terrain and uphill.
Yet, a higher octane rating is not always better: if the octane rating is too high, gasoline is not fully combusted. Under optimal circumstances, fuel combustion results in lesser amounts of carbon residue and, consequently, less urban air pollution.
The measurement of benzene content in fuels is also highly important for automotive research. Due to its toxicity and carcinogenic properties, benzene content in fuels is strictly limited and closely monitored by regulators. The aromatic hydrocarbon increases octane rating, but also generates deposits in the combustion chamber, which can affect oxidation stability of the gasoline, lead to overheating of cylinders, motor vibrations, reduced engine power and increased fuel consumption.
Besides the Grabner MINISCAN FTIR fuel analyser, the Ford Nanjing Test Center also uses Grabner’s MINIVAP vapor pressure testers and MINIDIS ADXpert automatic distillation tester as part of its tool kit for fuel analysis and engine performance testing.
More information about Grabner Instrument´s automotive fuel testers is available via
www.grabner-instruments.com. For More Info, email:
46780pr@reply-direct.com
email: For More Info, email:
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