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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Although f5002 condition can be compensated for by adjusting A and B, as described below, it is good practice to clean the tube with warm chromic acid solution Warning—Causes severe burns. The setting selected by this method could have the effect of altering the fourth place of the reading obtained for a sample.
PAC-Lab Instruments-ASTM D
In cases where saline components can be deposited asrm the cell,? This test method applies to crude xstm with high vapor pressures provided appropriate precautions are taken to prevent vapor loss during transfer of the sample to the density analyzer. Record the T-value for air. If the instrument has been calibrated to display the density, adjust the reading to the correct value for water at the test temperature see Table 1 by changing the value of Constant A, commencing with the last decimal place.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Mixing at room temperature in an open container can result in the loss of light ends, so mixing in astmm, pressurized containers or at sub-ambient temperatures is recommended. The d002 must appear to be homogeneous. The test specimen is obtained as follows: Carry out all calculations to six signi?
If stable values are not observed after a few minutes, then repeat the injection of a new sample into the tube. Adjust the bath or internal temperature control so that the desired test temperature is established and maintained in the sample compartment of the analyzer.
Calibration of Apparatus Calibrate the instrument at the same temperature at which the density of the sample is to be measured. Unless otherwise indicated it is intended that all reagents shall conform to the speci? Air or gas bubbles cause large random variations in the third and fourth signi?
Lighter crude oil can require special handling to prevent vapor losses. The sample tube shall be completely aetm. NOTE 2—The need for a change in calibration is generally attributable to deposits in the sample tube that are not removed by the routine? 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.
Historical Version s – view previous versions of standard Work Item s – proposed revisions asfm this standard Translated Version s: An astn of 0. Heavier crudes can require measurements at higher temperatures to eliminate air bubbles in the sample. Link to Active This link will always route to the current Active version of the standard.
Originally approved in Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Reagents and Materials 7. The last approved version of this historical standard is referenced on www.
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. Permission rights to photocopy the d50002 may also be secured from the X5002 website www.
D002 these conditions exist in the laboratory, pass the air used for calibration through a suitable puri? Allow the water to reach thermal equilibrium at the test temperature and record the T-value for water and the test temperature. Lighter crude oil can require special handling to prevent vapor losses. Leave the syringe in place and plug the exit port. These checks and any subsequent adjustments to Constants D5002 and B can be made if required, without repeating the calculation procedure.
The matrix for this bias study was comprised of 15 participants, each analyzing four reference oils with certi? Alternatively, use xstm T and d values for the other reference liquid if one is used.
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 Turn the illumination light off immediately after inspection of the sample tube, since the heat generated affects the measurement temperature. For additional information, consult the Journal of Physical Chemistry, Vol 84,pp.
In calibrating the thermometer, the ice point and bore corrections should be estimated to the nearest 0. The water must be free of even the smallest air or gas bubbles. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
ASTM D5002 – 16
Heavier crudes can require measurements at higher temperatures d0502 eliminate air bubbles in the sample. The setting chosen would then be dependent upon whether it was approached from a higher or lower value.
Use the procedure in If the instrument has been dd5002 to display the relative density, adjust the reading to the value 1. The instrument shall be capable of meeting the precision requirements described in Test Method D Make sure that there is no obvious presence of bubbles trapped in the U-tube, and that it is?
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
When s5002 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 order of 61 to 2 units in the last signi?
The accepted units of measurement of density are grams per millilitre and kilograms per cubic metre.
Temperature control can be maintained as part of the density analyzer instrument package. Current edition approved Sept.