C299 – ISO 8222 Annex A – Density of Water
Description
This calculates the density of water according to the calculation laid out in Annex A of ISO 8222.
References
ISO 8222 – Petroleum measurement systems – Calibration – Temperature corrections for use when calibrating volume proving tanks
Kelton calculation reference C299
FLOCALC calculation reference F097
KIMS calculation reference K230
Options
Water Choice
- Air free water
- Air saturated water
This option is used to select whether the correction for air saturated water is made or not.
Calculation
Density of Air-Free Water
The density of air-free water is calculated by:
| Where | ||
|---|---|---|
| ρ0 | = | 999.97358 (Maximum density of water (at t0)) |
| t0 | = | 3.9818°C |
| A | = | 7.0134 x 10-8 °C-1 |
| B | = | 7.926504 x 10-6 °C-2 |
| C | = | -7.575677 x 10-8 °C-3 |
| D | = | 7.314894 x 10-10 °C-4 |
| E | = | -3.596458 x 10-12 °C-5 |
Correction for Air-Saturated Water
The correction for air-saturated water is:
This is then added onto the density of air free water to give the density for air saturated water.