Patent ID: 6395228
Filing Date: 2002-05-28
Classification: G01N,Y10T

Abstract:
A system for the determination of at least one property of liquid hydrocarbon mixtures by spectral absorption comprising in combination:i. a multivariate spectrophotometer operably connected to measure said property; ii. at least two sources of reference liquid hydrocarbons having different known values of said property, said sources communicating with; iii. prototype injection means for automatically or periodically sequentially injecting a plurality of said reference liquid hydrocarbon mixtures into said multivariate spectrophotometer for calibration of said system over a range of said property; and additionally comprising in combination the following elements in fluid communication:a. sample supply means (20); upstream of the following which are connected in series b. sample filter means (70); and c. sample temperature controller means (96); and d. degassing means (110); all upstream of e. analysis probe holder means (130); connected upstream of f. sample return means (150).