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ASTM D2440 for oxidation stability of mineral insulating oil
ASTM D2440 for oxidation stability of mineral insulating oil13. Procedure13.1 Prepare two copper catalysts as described in Section 10. Insert one in each of two clean, dry oil receptacles prepared as described in Section 9.13.2 Transfer 25 more or less 0.01 g of the conditioned oil test specimen into ...
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ASTM D2440 for oxidation stability of mineral insulating oil
ASTM D2440 for oxidation stability of mineral insulating oil8. Preparation of Oxygen Supply8.1 Oxidize the oil by contact with oxygen of 99.4 % minimum purity conditioned as follows:8.1.1 Use metal or glass tubing to deliver the oxygen to the oxygen delivery tube. Eliminate rubber connections if possible. ...
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ASTM D2440 for oxidation stability of mineral insulating oil
ASTM D2440 for oxidation stability of mineral insulating oil5. Apparatus5.1 Aging (Oxidation) Bath - An oil bath, wax bath, or aluminum block heater (see IEC Standard 61125) of a suitable type capable of controlling the temperature at 110 more or less 0.5°C with a temperature gradient of less than 1°C ...
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ASTM D2440 for oxidation stability of mineral insulating oil
ASTM D2440 for oxidation stability of mineral insulating oil3. Summary of Test Method3.1 A test specimen of mineral transformer oil is oxidized at a bath temperature of 110°C, in the presence of a copper catalyst coil, by bubbling oxygen through duplicate test specimens for 72 and 164 h, respectively. ...
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ASTM D2440 for oxidation stability of mineral insulating oil
ASTM D2440 for oxidation stability of mineral insulating oil1. Scope1.1 This test method determines the resistance of mineral transformer oils to oxidation under prescribed accelerated aging conditions. Oxidation stability is measured by the propensity of oils to form sludge and acid products during ...
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ASTM D2386 standard test method for freezing point of aviation fuels
ASTM D2386 standard test method for freezing point of aviation fuels8. Report8.1 The observed freezing point determined in Section 7 shall be corrected by applying the relevant thermometer correction resulting from the checks described in Note 3. Where the observed freezing point falls between two calibration ...
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ASTM D2386 standard test method for freezing point of aviation fuels
ASTM D2386 standard test method for freezing point of aviation fuels7. Procedure7.1 Measure out 25 more or less 1 mL of the fuel and transfer it to the clean, dry, jacketed sample tube. Close the tube tightly with the cork holding the stirrer, thermometer, and moisture proof collar and adjust the thermometer ...
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ASTM D2386 standard test method for freezing point of aviation fuels
ASTM D2386 standard test method for freezing point of aviation fuels5. Apparatus5.1 Jacketed Sample Tube - A double-walled, unsilvered vessel, similar to a Dewar flask, the space between the inner and outer tube walls being filled at atmospheric pressure with dry nitrogen or air. The mouth of the sample ...
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ASTM D2386 standard test method for freezing point of aviation fuels
ASTM D2386 standard test method for freezing point of aviation fuels4. Significance and Use4.1 The freezing point of an aviation fuel is the lowest temperature at which the fuel remains free of solid hydrocarbon crystals that can restrict the flow of fuel through filters if present in the fuel system ...
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ASTM D2386 standard test method for freezing point of aviation fuels
ASTM D2386 standard test method for freezing point of aviation fuels1. Scope1.1 This test method covers the determination of the temperature below which solid hydrocarbon crystals may form in aviation turbine fuels and aviation gasoline.NOTE 1 - The interlaboratory program that generated the precisions ...
