Automatic pressure correction for level gauges in storage tanks
US10234353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2016 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Nov 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A level gauge system for mounting on a roof of a semi-closed storage tank includes an automatic tank level gauge for determining a level reading for a liquid including at least one liquid component in the tank. A processor includes a memory storing pressure correction factors or a pressure correction factor equation for correcting the level reading for a measured gas pressure above the liquid in the tank. The processor is programmed for implementing choosing a selected pressure correction factor from the pressure correction factors or the equation based on a received current gas pressure above, and applying the selected pressure correction factor for automatically correcting the level reading provided by the tank level gauge to generate a corrected level reading which compensates for the current gas pressure above effects on the roof and on the level gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.