GB/T 11059-2011 Standard test method for determination of vapor pressure of crude oil:VPCRx(expansion method)

Scope

1.1 This standard specifies the method of measuring the vapor pressure of crude oil using an automatic vapor pressure measuring instrument.
1.2 This standard is applicable to crude oil with a vapor pressure of 25 kPa to 180 kPa, a measurement temperature of 37.8 ℃, and an expanded gas-liquid ratio ranging from 4:1 to 0.02:1. This standard can also be used to measure the vapor pressure of crude oil up to 500 kPa, with a measurement temperature range of 0 ℃ to 100 ℃, but the accuracy may not be suitable.
1.3 This standard can also be used for online measurement, but the sample cannot be subjected to gas saturation treatment before measurement.

Development Information

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