Method of measuring a minimum pressure for gas bubble generation of a capillary tube, and related methods
US12253537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2021 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Aug 14, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2013/0241
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of measuring a minimum pressure for gas bubble generation (MPGBG) value of a capillary tube is disclosed. The capillary tube has an inlet and an output portion including an outlet. The inlet is connected to a regulated pneumatic system, configured to supply a gas to the inlet under pressure. The output portion is immersed in a liquid. The gas is supplied to the inlet under a range of pressures including a higher pressure range and a lower pressure range. In the higher pressure range, gas bubbles are generated in the liquid from the outlet. In the lower pressure range, no gas bubbles are generated in the liquid from the outlet. A value of the minimum pressure for gas bubble generation (MPGBG) for the liquid is determined.Other methods include a method of measuring and storing MPGBG values of capillary tubes, methods of selecting at least one capillary tube from a plurality of capillary tubes, and a method of cutting a capillary tube to a desired MPGBG value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.