API MPMS Chapter 7.2

Manual of Petroleum Measurement Standards- Chapter 7.2 -Temperature Determination - Portable Electronic Thermometers, Third Edition, Includes Errata 1 (2021) and Errata 2 (2023)

American Petroleum Institute, 05/01/2018

Publisher: API

File Format: PDF

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Description

Published:01/05/2018

Pages:30

File Size:1 file , 830 KB

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This chapter describes the methods, equipment, and procedures for manually determining the temperature of liquid petroleum and petroleum products by use of a portable electronic thermometer (PET).

This chapter discusses temperature measurement requirements in general for custody transfer, inventory control, and marine measurements. The actual method and equipment selected for temperature determination are left to the agreement of the parties involved.

The manual method covers:

nonpressurized tanks and nonpressurized marine vessels;
gas-blanketed tanks and gas-blanketed marine vessels.

It does not cover hydrocarbons under pressures in excess of 21 kPa (3 psi gauge) or cryogenic temperature measurement, unless the tank is equipped with a thermowell.