ASTM D6377 Apparatus for Vapor Pressure of Crude Oil

KN-6377 Apparatus for Vapor Pressure of Crude Oil conforms to ASTM D6377 Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCRX (Expansion Method). Employing a measuring chamber with a built-in piston, a sample of known volume is drawn from the sample container into the temperature controlled chamber at 20℃ or higher. After sealing the chamber, the volume produces the desired V/L value. The temperature of the measuring chamber is then regulated to the measuring temperature. After the temperature and pressure equilibrium, the measured pressure is recorded as the VPCRX of the sample. The test specimen shall be mixed during the measuring procedure by shaking the measuring chamber to achieve pressure equilibrium in a reasonable time of 5 to 30min. For results related to Test Method D323, the final volume of the measuring chamber shall be five times the test specimen volume and the measuring temperature shall be 37.8℃.