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What is the meaning of TBN and TAN?
You may have seen or heard the terms TBN or TAN being used. TBN stands for Total Base Number, while TAN is short for Total Acid Number. Both of the tests monitor the effective life of in-service lubricants. The terms for "Total Base Number" and "Total Acid Number" are generally outdated terms and the ...
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Operation procedure of K632 total acid number analyzer
1. Put the extraction liquid and neutral liquid into the place at the back of instrument, cover them by extraction liquid cap and neutralizer cap, then, follow the operation procedure.2. Connect to the power, start up the instrument.3. Enter Manual Operation interface, choose “Filling neutral fuild”, ...
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Transformer oil dielectric strength - test low dielectric strength oil
The dielectric strength of this kind of oil is usually between 15kV and35kV. The instrument can test it normally too. During rising of voltage, a fewbubble particulate or impurities will be adsorbed to electrode gap to causedischarge. The bubble will be broken through and pushed out from electrode gap,and ...
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Dielectric Dissipation Factor Tester - Use New Oil Sample to Clean Oil Cup
Sometimes, there are many oil samples, testing will be carried out one by one. The cleaning of electrode may be simplified as follows:(1) Turn off the instrument, take out oil cup from heater, and take out inner electrode from oil cup;(2) Pour oil from oil cup into a container, use new oil sample to ...
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Dielectric Dissipation Factor Tester - Cleaning of Oil Cup
It is critical important to have oil cup cleaned before measuring. Insulating oil is extremely sensitive to any tiny pollution, so the cleaning work should be carried out as follows:. (1) Take out electrode; (2) Clean with neutral soap or detergent. Do not damage surface of electrode; (3) Clean electrode ...
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Faraday's laws of electrolysis
• Faraday's 1st Law of Electrolysis - The mass of a substance altered at an electrode during electrolysis is directly proportional to the quantity of electricity transferred at that electrode. Quantity of electricity refers to the quantity of electrical charge, typically measured in coulomb. • Faraday's ...
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Working principle of Karl Fischer moisture analyzer
Karl Fischer reagent reacts with water as follows:The reagent is a mixture of iodine, pyridine with sulfur dioxide and methanol etc. The iodine is formed on the anode by electrolysis. According to Faraday's law, the same amount of electric charge is proportional, the formula is as follows:It is easy ...
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Some tips on selection of gas chromatographic column
Generally, when operators use gas chromatograph first time, they do not know how to configure chromatographic column reasonably. They always want more chromatographic columns because they believe the more columns bring the better. Then, they blindly purchase many columns, stationary liquid or supporters ...
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Gas chromatographic test method
Gas chromatographic test method is a part of gas chromatography. It should contain two aspects: one is the proper selection and use of detectors, the other is the optimization of relevant conditions. A good gas chromatographic test method should be in an optimal condition of these two aspects. 1. Proper ...
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Impact of chromatographic column temperature
Most separation works are carried out at room temperature. If laboratory temperature keeps the same, the separation work goes smoothly. However, in most cases, the temperature will change, which directly affects the experiments. Temperature affects the isocratic retention time of separation. Generally, ...
