ISO 12185:2024
Crude petroleum, petroleum products and related products — Determination of density — Laboratory density meter with an oscillating U-tube sensor
This document specifies a method for the determination, using an oscillating U-tube density meter, of the density of crude petroleum and related products within the range 600 kg/m3 to 1 100 kg/m3, which can be handled as single-phase liquids at the test temperature and pressure.
This document is applicable to liquids of any vapour pressure as long as suitable precautions are taken to ensure that they remain in single phase. Loss of light components leads to changes in density during both the sample handling and the density determination.
This method is not intended for use with in-line density meters.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Density meter
5.2 Homogenizer
5.3 Constant-temperature bath
6 Reagents and materials
6.1 Flushing solvent
6.2 Adjustment liquids
7 Sampling
8 Sample preparation
9 Apparatus preparation
9.1 Test temperature
9.2 Cell cleaning
9.3 Meter verification and adjustment
9.4 Meter calibration
9.5 Quality control checks
10 Test procedure
11 Calculation
12 Test report
13 Precision
13.1 Repeatability, r
13.2 Reproducibility, R
Annex A (informative) Meter calibration
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Density meter
5.2 Homogenizer
5.3 Constant-temperature bath
6 Reagents and materials
6.1 Flushing solvent
6.2 Adjustment liquids
7 Sampling
8 Sample preparation
9 Apparatus preparation
9.1 Test temperature
9.2 Cell cleaning
9.3 Meter verification and adjustment
9.4 Meter calibration
9.5 Quality control checks
10 Test procedure
11 Calculation
12 Test report
13 Precision
13.1 Repeatability, r
13.2 Reproducibility, R
Annex A (informative) Meter calibration
Bibliography