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Dissolved Gas Analysis
Dissolved gas analysis (DGA) is the study of dissolved gases in insulating fluid such as transformer oil. Insulating materials within transformers and electrical equipment break down to liberate gases within the unit. The distribution of these gases can be related to the type of electrical fault, and ...
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Kinematic Viscosity
Kinematic viscosity is the dynamic viscositydivided by the density (typical units cm2/s, Stokes, St). In practice, it is also an important factor to design and select petroleum product. Capillary viscometer is used to measure flow under gravity at a certain temerature. Till now, the glass tueb viscometer ...
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Loss Tangent
The loss tangent is a parameter of a dielectric material that quantifies its inherent dissipation of electromagnetic energy.
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Karl Fischer Titration
Karl Fischer titration is a classic titration method uses coulometric titration to determine amounts of water in petroleum products. It was invented in 1935 by the German chemist Karl Fischer.
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Pensky-Martens Closed-cup Method
Pensky-Martens closed-cup method is used for measuring the flash point of petroleum products. The brass cup is filled with a petroleum product and covered by a cap. The petroleum product is heated and stirred till to its flash point.
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Cleveland Open-cup Method
Cleveland open-cup method is used for measuring the flash point of petroleum products. It useds Cleveland open-cup apparatus, known as Cleveland open-cup tester. The brass cup is filled to a certain level with a portion of petroleum product. Then, the temperature of this petroleum product is increased ...
