API MPMS CH 9.2
API MPMS CH 9.2: Standard Test Method for Density or Relative Density of Light Hydrocarbons by Press
CDN $111.00
Description
Covers the determination of the density or relative density of light hydrocarbons including liquefied petroleum gases (LPG) having Reid vapor pressures exceeding 101.325 kPa (14.696 psi).
The prescribed apparatus should not be used for materials having vapor pressures higher than 1.4 MPa (200 psi) at the test temperature. This pressure limit is dictated by the type of equipment. Higher pressures can apply to other equipment designs.
The initial pressure hydrometer readings obtained are uncorrected hydrometer readings and not density measurements. Readings are measured on a hydrometer at either the reference temperature or at another convenient temperature, and readings are corrected for the meniscus effect, the thermal glass expansion effect, alternate calibration temperature effects and to the reference temperature by means of calculations and volume correction factors (API MPMS Ch. 11.1) or API MPMS Ch. 11.2.4 (GPA TP-27), as applicable.
Values determined as density or relative de
Edition
4
Published Date
2023-01-12
Status
Current
Pages
13
Language
English
Format
Secure PDF
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Abstract
Covers the determination of the density or relative density of light hydrocarbons including liquefied petroleum gases (LPG) having Reid vapor pressures exceeding 101.325 kPa (14.696 psi). The prescribed apparatus should not be used for materials having vapor pressures higher than 1.4 MPa (200 psi) at the test temperature. This pressure limit is dictated by the type of equipment. Higher pressures can apply to other equipment designs. The initial pressure hydrometer readings obtained are uncorrected hydrometer readings and not density measurements. Readings are measured on a hydrometer at either the reference temperature or at another convenient temperature, and readings are corrected for the meniscus effect, the thermal glass expansion effect, alternate calibration temperature effects and to the reference temperature by means of calculations and volume correction factors (API MPMS Ch. 11.1) or API MPMS Ch. 11.2.4 (GPA TP-27), as applicable. Values determined as density or relative de
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