In-situ pressure sensor bias determination apparatus, subsea sensor node apparatus and method of determining a bias of a pressure sensing apparatus
US11015995B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2016 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Apr 8, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An in-situ pressure sensor bias determination apparatus (300) comprises a measurement pressure sensor (400), a reference pressure sensor (402), an electronically controllable pressure adjustment device (406), and a fluid conduit network (410) having an ambient access port (412). The measurement pressure sensor (400) has a greater operating pressure range than the reference pressure sensor (402). The measurement pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment device (406) are sealingly coupled to the fluid conduit network (410) so as to define a volume that is open only at the ambient access port (412). An ambient isolation device (420) is arranged to isolate selectively the ambient access port (412) from the measurement pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment device (406), thereby closing the open volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.