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ASTM D1275 for corrosive sulfur in electrical insulating oils
7. Preparation of Apparatus7.1 Chemically clean flasks, glass stoppers, bottles and PFTE screw plugs with solvents to remove oil, then wash the flasks with sulfur-free cleaning powder or liquid. Rinse with tap water, then with distilled water, and dry in an oven.7.2 Cut a strip of copper 6 by 25 mm (1/4 ...
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ASTM D1275 for corrosive sulfur in electrical insulating oils
4. Significance and Use4.1 In most of their uses, insulating oils are continually in contact with metals that are subject to corrosion. The presence of corrosive sulfur compounds will result in deterioration of these metals. The extent of deterioration is dependent upon the quantity and type of corrosive ...
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ASTM D1275 for corrosive sulfur in electrical insulating oils
1. Scope1.1 This test method describes the detection of corrosive sulfur compounds (both inorganic and organic) in electrical insulating oils of petroleum origin.1.2 New and in-service mineral insulating oils may contain substances that cause corrosion under certain conditions of use. This test method ...
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ASTM D1742 for oil separation from lubricating grease during storage
11. Report11.1 Report the mass of the oil separated as a percentage of the total mass of the grease sample. Record the value to the nearest 0.1 %.12. Precision and Bias12.1 The precision of the test method is not known to have been obtained in accordance with currently accepted guidelines in Committee ...
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ASTM D1742 for oil separation from lubricating grease during storage
9. Preparation of Apparatus9.1 Thoroughly clean the strainer, cup, and oil-collecting beaker with mineral spirits and follow by air drying.9.2 Carefully inspect the sieve to make certain that there is no build-up which would affect the passage of oil. The sieve must also be free of any surface irregularities ...
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ASTM D1742 for oil separation from lubricating grease during storage
6. Apparatus6.1 Test Apparatus - The assembled apparatus consists of a tightly fitting cup and cover which contains a 75-µm (No. 200) sieve strainer for supporting the grease, a funnel for collecting separated oil, and a 20-mL beaker for retaining the separated oil. A fitting is provided in the cover ...
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ASTM D1742 for oil separation from lubricating grease during storage
4. Summary of Test Method4.1 The sample of grease, supported on a 75-µm (No. 200) sieve, is subjected to 1.72 kPa (0.25 psi) air pressure for 24 h at 25°C (77°F). Any oil seepage that occurs drains into a beaker and is weighed.5. Significance and Use5.1 When a lubricating grease separates oil, the ...
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ASTM D1742 for oil separation from lubricating grease during storage
1. Scope1.1 This test method covers the determination of the tendency of a lubricating grease to separate oil during storage in both normally filled and partially filled containers.1.2 This test method is not suitable for greases softer than NLGI No. 1 grade.1.3 The values stated in SI units are to be ...
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ASTM D56 - flash point test and flammability of mixtures
2.1 While the flash point can be used to indicate the flammability of liquid materials for certain end uses, flash point does not represent the minimum temperature at which a material can evolve flammable vapors.2.2 There are instances with pure materials where the absence of a flash point does not ensure ...
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Flash point masking phenomenon of Tag closed cup tester
1.1 A condition during flash point testing can occur with certain mixtures whereby the nonflammable component of the sample tends to inert the vapor space above the liquid, thus preventing a flash. Under this condition, the flash point of the material is masked resulting in the reporting of incorrect ...
