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API MPMS 7.1-2024
石油測量標準 第7部分:液柱式溫度計溫度確定

Petroleum Measurement Standards Chapter 7.1 Temperature Determination—Liquid-in-Glass Thermometers


標準號
API MPMS 7.1-2024
發布
2024年
總頁數
47頁
發布單位
美國石油學會
當前最新
API MPMS 7.1-2024
 
 
引用標準
ASTM D1250 ASTM E1 ASTM E2251 ASTM E344 ASTM E77 NFPA 70
 
 
本體
溫度測量
適用范圍
This section describes how to correctly use various types of liquid-in-glass thermometers to accurately determine the temperatures of hydrocarbon liquids. Other methods, equipment, and procedures for temperature determination are described in the other subsections of API MPMS Chapter 7. This chapter describes the methods, equipment, and procedures for manually determining the temperature of liquid petroleum and petroleum products with liquid-in-glass thermometers. 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: — non-pressurized tanks and non-pressurized marine vessels; — gas-blanketed tanks and gas-blanketed marine vessels. It does not cover hydrocarbons under pressures in excess of 21 kPa gauge (3 psi gauge) or cryogenic temperature measurement, unless equipped with a thermowell. The requirements of this chapter are based on practices for crude oils and petroleum products covered by API MPMS Ch. 11.1 (ASTM D1250). Requirements in this chapter may be used for other fluids and other applications. However, other applications may require different performance and installation specifications.
術語描述
攝氏度
degree Celsius
國際單位制 (SI) 中的溫度單位。
華氏度
degree Fahrenheit
美國習慣單位制 (USC) 中的非SI溫度單位。
溫度分辨率
temperature discrimination
感知和記錄液體實際溫度到指定溫度增量的能力。
液體玻璃溫度計
liquid-in-glass thermometer
含有汞或低危害液體的玻璃溫度計,用于指示被測溫度。
全浸式溫度計
total-immersion thermometer
設計用于在溫度計液體部分完全浸入被測介質時正確指示溫度的液體玻璃溫度計。

API MPMS 7.1-2024 中提到的儀器設備

ASTM precision 63C-86

?8 °C to +32 °C, 0.1 °C graduation, ±0.1 °C accuracy
高精度玻璃溫度計,適用于動態溫度測量。
ASTM tank 58C-86

?34 °C to +49 °C, 0.5 °C graduation, +0.3 °C accuracy
用于動態溫度測量的全浸式玻璃溫度計。

專題


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