Endress+Hauser NXA820 - Page 60

Calculations Tankvision
60 Endress+Hauser
8.7.1 Main differences to the API standard
JIS is only available for the following product types:
• Generalized Crudes
• Generalized Refined Products
• Generalized Lubricants
•LPG
8.7.2 Volume Correction Factor - VCF
The following VCF table is implemented:
• JIS K 2249 2A
8.7.3 Density Calculation - RDC
If the user wants to calculate the Observed Density, RDC_JIS has to be selected in the RDC
settings of the product:
• Observed Density = Reference Density x VCF
8.7.4 Floating roof adjustment - FRA
The following new options are available for the floating roof adjustments:
•(JIS) No FRA:
JIS_FRA_No-FRA
• (JIS) Nippon Kaiji:
JIS_FRA_Nippon-Kaiji
• (JIS) Shin Nihon 1:
JIS_FRA_Shin-Nihon-1
• (JIS) Shin Nihon 2:
JIS_FRA_Shin-Nihon-2
• (JIS) Shin Nihon 3:
JIS_FRA_No-FRA
Where:
• FRW = Floating Roof Weight
FRA = 0
FRA = (FRW / ) × FRPρ
ref
FRA = ((1 / ) - × FRPρ
ref
(F / )) FRW ×BSG
FRA = ((1 / ) - × FRPρ
ref
(1 / )) FRW ×BSG
FRA = 0