GB/T 21451.5-2019 Translated English of Chinese Standard. (GBT 21451.5-2019, GB/T21451.5-2019, GBT21451.5-2019): Petroleum and Liquid Petroleum Products - Measurement of Level and Temperature in Storage Tanks by Automatic Methods - Part 5: Measurement of Temperature in Marine Vesselshttps://www.chinesestandard.net, 2 nov. 2019 - 19 pages This Part of GB/T 21451 provides the selection, accuracy, installation, debugging, calibration and inspection guidance for automatic tank thermometer (ATT), which is adopted for the measurement of temperature of petroleum and liquid petroleum products in marine vessels. This Part is applicable to the custody transfer metering of petroleum and liquid petroleum products with the Reid vapor pressure of not more than 100 kPa. |
Table des matières
3 | |
Scope | 6 |
Requirements | 7 |
Accuracy | 8 |
Selection of ATT | 11 |
ATT Equipment Instruction of Electronic Temperature Sensing Element | 12 |
Calibration and Onsite Inspection of Marine ATT | 13 |
Data Communication | 17 |
Appendix A informative Influencing Factors of Temperature Measurement Accuracy of Marine Vessels | 19 |
Expressions et termes fréquents
accuracy of temperature adopted applied to custody approaches fully-loaded Automatic Methods automatic tank thermometer average temperature obtained calibration adjustment device calibration and inspection Calibration before installation cargo hold comply components corresponding national primary custody transfer metering digital display device electronic temperature sensing GB/T inspection tolerance liquid level measurement Liquid Petroleum Products liquid temperature location of manual long-distance digital display manual temperature measurement marine ATT marine vessels measurement by PET Measurement of Level Measurement of Temperature measures the temperature Multiple-point ATT NOTE operating conditions Paragraph PET temperature measuring Petroleum and Liquid reference standard requirement of accuracy resistance temperature detector sea trial sensor shipyard or sea Single-point ATT Storage Tanks tank’s ATT system Tanks by Automatic temperature becomes stable temperature element Temperature in Marine Temperature in Storage temperature point temperature sensing element temperature stratification temperature transmitter temperature transmitter/converter total accuracy traceable to corresponding transmitter and digital vapor holding valve vapor pressure