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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PAC-Lab Instruments-ASTM D
Make sure that there is no obvious presence asstm bubbles trapped in the U-tube, and that it is? In calibrating the thermometer, the ice point and bore corrections should be estimated to the nearest 0.
Preparation of Apparatus 9.
Precise setting and control of the test temperature in the sample tube is extremely important. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
It is the responsibility d50002 the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The test specimen is obtained as follows: 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? Permission rights to photocopy the standard may also be secured from the ASTM website www.
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.
ASTM D5002 – 16
Calibration of Apparatus Lighter crude oil can require special handling to prevent vapor losses. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Adjust the bath or internal temperature control so that the desired test temperature is established and maintained in the sample compartment of the analyzer.
Mixing is required to obtain a homogeneous sample for analysis.
Precision and Bias 5,6 Summary of Test Method 4. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
No other units of measurement are included in this standard. The analyzer must accommodate the accurate measurement of the 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 Originally approved in The setting chosen would then be dependent upon whether it was approached from a higher or lower value.
The last approved version of this historical standard is referenced on www. 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 Temperature control can be maintained as part of the density analyzer instrument package.
Lighter crude oil can require special handling to prevent vapor losses. A5 [Tw2 2 2 If the display does not exhibit the correct T-value or density for air at the temperature of test, repeat the cleaning procedure or adjust the value of Constant B commencing with the last decimal place until the correct density is displayed.
Heavier crudes can require measurements at higher temperatures to eliminate air bubbles in the sample.
This test method applies to 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 instrument shall be capable of meeting the precision requirements described in Test Method D Current edition approved Sept. The water must be free of even the smallest air or gas bubbles. Contaminated or humid air can affect the calibration. When these conditions exist in the laboratory, pass the air used for calibration through a suitable puri?
Chromic acid solution is the most effective cleaning agent; however, surfactant-type cleaning? An error of 0. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
No other units of measurement are included in this standard. If stable values are not observed after a few minutes, then repeat the injection of a new sample into the tube. 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.
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 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.
Mixing at room temperature in an open container can result in the loss of light ends, so mixing in closed, pressurized containers or at sub-ambient temperatures is recommended. The sample must appear to be homogeneous. Careful injection of fresh sample will often eliminate bubbles. Record xstm T-value for air. Sampling, Test Specimens, and Test Units 8.