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API MPMS Chapter 7.4 Manual of Petroleum Measurement Standards - Chapter 7 - Temperature Determination: Section 4-Dynamic Temperature Measurement, Second Edition
Handbook / Manual / Guide by American Petroleum Institute, 01/01/2018
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SECOND EDITION, JANUARY 2018
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The purpose of this standard is to describe the measurement practice to accurately determine the temperature of liquid hydrocarbons under dynamic (i.e. flowing) conditions. The accurate measurement of temperature is essential to accurately determine the average temperature of the hydrocarbon liquid transferred, for the purpose of obtaining the temperature and pressure volume correction factors (refer to API MPMS Chapter 11.1) to calculate the volume at standard conditions.
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Chapter 7—Temperature Determination Section 4—Dynamic Temperature Measurement
This standard describes methods, equipment, installation, and operating procedures for the proper determination of the temperature of hydrocarbon liquids under dynamic conditions in custody transfer applications. This standard describes the accuracy requirement and the calibration of the temperature measurement equipment.
This standard does not cover dynamic temperature measurement of refrigerated, light hydrocarbon fluids or cryogenic liquids.
The following standards and other industry publications contain provisions that, through reference in this text, constitute provisions of this standard. All standards are subject to revision, and parties to agreements based on this standard are encouraged to use the most recent editions of the standards indicated below:
Chapter 1, Terms and Definitions, https://chapter1.api.org
Chapter 4 (All Relevant Sections), Proving Systems
Chapter 5 (All Relevant Sections), Metering Systems
Chapter 6 (All Relevant Sections), Metering Assemblies
Chapter 7.1, Liquid in Glass Thermometers
Chapter 12.2, Calculation of Liquid Petroleum Quantities Using Dynamic Measurement Methods
Chapter 21.2, Electronic Liquid Volume Measurement Using Positive Displacement and Turbine Meters
API Recommended Practice 500, Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I Division 1 and Division 2
API Recommended Practice 2003, Protection Against Ignitions Arising Out of Static, Lighting, and Stray Currents
ASME PTC 19.3TW_2016, American National Standard for Thermowells
ASTM E1, Standard Specification for ASTM Thermometers
ASTM E77, Standard Test Method for Inspection and Verification of Liquid-in-glass Thermometers
ASTM E344, Terminology Relating to Thermometry and Hydrometry
American Society of Mechanical Engineers, Two Park Avenue, New York, NY 10016-5990
ASTM International, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428, www.astm.org
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