API Gravity – Petroleum – Digital Density Meter Application Note. API Gravity – Petroleum – Digital Density Meter Application Note. API Gravity – Density Meter. Buy ASTM D TEST METHOD FOR DENSITY AND RELATIVE DENSITY OF CRUDE OILS BY DIGITAL DENSITY ANALYZER from SAI Global. Purchase your copy of ASTM D – 16 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.
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Work Item s – proposed revisions of this standard. Reagents and Materials 7. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Since bubbles contribute to lower density readings, an observed increase in the density of the liquid after injection of atm sample tends to suggest that bubbles were previously present. Sampling, Test Specimens, and Test Units 8.
Allow the water to reach thermal equilibrium at the test temperature and record the T-value for water and the test temperature. The setting selected by this method could have the effect of altering the fourth place of the reading obtained for a sample.
Historical Version s – view previous versions of standard. Lighter crude oil can require special handling to prevent vapor losses. Heavier crudes can require measurements at higher temperatures to eliminate air bubbles in the sample. In cases where saline components can be deposited in the cell,?
The presence of bubbles can often be detected, however, by observing the? Use the procedure in Summary of Test Method 4. When bubbles are absent and the sample is at equilibrium with the test temperature, the displayed values are stable, do not drift, and show only small variations of the qstm of 61 to 2 units in the last signi? If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
The accepted units of measurement of density are grams per millilitre and kilograms per cubic metre. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Preparation of Apparatus 9. D50002 test method applies d5020 crude oils with high vapor pressures provided appropriate precautions are taken to prevent vapor loss during transfer of the sample to the density analyzer. The accepted units of measurement of density are grams per millilitre and kilograms per cubic metre. This test method applies to crude oils with high vapor pressures provided appropriate precautions are taken to prevent vapor adtm during transfer of the sample to the density analyzer.
Originally approved in Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. If the instrument has been calibrated to display the relative density, adjust the reading to the value 1. Precision and Bias 5,6 dd5002 Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Record the T-value for air. An error of 0. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
These checks and any subsequent adjustments to Constants A and Asmt can be made if required, without repeating the calculation procedure. Thereafter, conduct calibration checks at least weekly during routine operation or more frequently as may be dictated by the nature of the crude oils being measured see Calibrate the instrument at the same temperature at which the density of the sample is to be measured.
The sample tube shall be completely full. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
NOTE 4—When viscous liquids are 5d002 measured, a stable reading can be achieved even when air or gas bubbles are present.
Users of this standard are expressly advised that d002 of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. The analyzer must accommodate the accurate measurement of asrm 1 This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D For additional information, consult the Journal of Physical Chemistry, Vol 84,pp.
Carry out all calculations to six signi? The instrument shall be capable of meeting the precision requirements described in Test Method D Users should, therefore, be aware that results obtained by this test method can be biased by as much as 0. Chromic acid solution is the most effective cleaning agent; however, surfactant-type cleaning?
NOTE 3—In applying this periodic calibration procedure, it has been found that more than one value each for A and B, differing in the fourth decimal place, will yield the correct reading dd5002 the density of air and water. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Current edition approved Sept.
ASTM D5002 – 16
Adjust the bath or internal temperature control so that the desired test temperature is established and maintained in the sample compartment of the analyzer. Make sure that there is no obvious presence of bubbles trapped in the U-tube, and that it is?
The test specimen is obtained as follows: