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Title: Fundamentals Of Liquid Measurement - Part 1
Author: David Beitel
Source: 2007 International School of Hydrocarbon Measurement
Year Published: 2007
Abstract: Correct measurement practices are established to minimize uncertainty in the determination of the custody transfer volume (or mass) of products. Understanding and evaluation of the fundamental cause and effect relationships with the liquid to be measured will lead to a volume determination that most closely matches the true volume at the referenced standard pressure and temperature. When designing a new measurement station it is up to us as measurement people, to understand the product to be measured, apply the correct equipment, and implement the appropriate correction equations. Proper procedures could implement this process: 1. What is the Composition or Fluid to be measured? a. Crude Oil b. Light Liquid Hydrocarbon - Condensate - Natural Gas Liquids c. Pure Product i. Propane ii. Butane d. Refined Product 2. What is the operating Pressure and Temperature? 3. How does the operating Pressure and Temperature affect: a. Density b. Expansion/Contraction Characteristics c. Viscosity d. Vapor Pressure 4. What other operational factors affect proper measurement? a. Basic Sediment and Water 5. Based on the answers to the previous questions, what is the best equipment to handle the product? 6. What types of calculations will be implemented to correct the volume, or mass, measured at process conditions to the standard conditions

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