ASTM D3613 PDF

Test Method D, Table 1, provides coefficients of variation for different gas-in-oil analysis from samples collected in the three containers recommended in this practice. If any sound is heard,the astk should be drained and the sampling repeated. Preparation for Sampling 6. It isdesirable that stainless steel cylinders be evacuated and sealedafter cleaning. However, gas-saturated samples will begin to release gases bubbles soon after sampling. Remove the security pipe plug fromthe drain valve.

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Chalmers The Components of Content. Wipe the inside of the valve and threads with a clean lint-free cloth. Cleaning of Apparatus 5. If any sound is heard,the cylinder should be drained and the sampling repeated. Sampling should be discontinued. It isdesirable that stainless steel cylinders be evacuated and sealedafter cleaning. Syringes having precision astmm barrels andpistons are preferred. A large variancefrom normal should be considered when evaluating the testresults obtained when the syringe conditioning was not used.

Collecting Samples Using Syringe 8. The tubing should not be reused. Wipethe inside of the valve and threads with a clean lint-free cloth. Perform this condition procedure onemore time. While observing the slug of insulating fluid, slowly crack the sample outlet valve open. If the slug moves towardsthe electrical apparatus, a negative pressure exists. Immediately close the port to thesyringe Fig.

Connectthe oil-resistant tubing to the d valve port on the steelcylinder and connect a short piece approximately 60 cm 24in. Immediately close the port into the syringe Fig.

To the running of this website, we need your help to support us. Do not release any evolved gases bubbles since these gases must be included in the dissolved gas analysis.

Flush the valve at installed sample adapter, flushing at least one more quart of fluid into the flush oil container before collecting sample. Once the container is full, install thecap immediately. Contact with us now Your mail: If the slug moves towards the electrical apparatus, a negative pressure exists.

Package the filled syringe as soon as possible to protect the sample from light. Thank you for visiting our website and your interest in our free products and services.

These cylindershave the disadvantage of not allowing visual inspection of theinterior of the cylinder. Care must be taken in drawing samples to preventcontamination and to ensure a truly representative sample. This should involve a volumeof air equivalent to at least 55 changes of the cylinder volumeduring the 15 min period of drying. One of twoprocedures may then be used to prepare the sample outlet.

Do not allow the oil to be exposed tosunlight. Preparation for Sampling 6. Last previous edition D — Take extreme caution when samples are drawn from electrical apparatus having a small volume of insulating fluid. Samples can be obtained safely. Extreme care should be used in performing this procedure. Test Method D, Table 1, provides coefficients of variation for different gas-in-oil analysis from samples collected in the three containers recommended in this practice.

Care shall be taken not tocontaminate the syringe inlet port. Install the drain valve security plug. Samples should be forwardedto the laboratory as quickly as possible. See Test Methods D for further details about generalcleaning requirements. With all three valves openand the cylinder held in a vertical position see Fig. If the slug moves away from theelectrical apparatus, a positive pressure exists.

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ASTM D3613

Dom A large variancefrom normal should be considered when evaluating the testresults obtained when the syringe conditioning was not used. To minimizewaste and potential spills a length of 60 cm 24 in. We Need Your Support. With all three valves openand the cylinder held in a vertical position see Fig. Epidemiology, pathogenesis, and clinical manifestations of Ebola and Marburg virus disease. However, gas-saturated samples will begin to release gases bubbles soon after sampling. This should involve a volumeof air equivalent to at least 55 changes of the cylinder volumeduring the 15 min period of drying.

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