Flow ratio controller system operating in alternative control modes
US12399516B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2024 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Apr 13, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flow ratio controller system includes an inlet receiving a total inlet fluid flow from one or more inlet channels, distribution channels fluidically connected to the inlet and arranged in parallel in a branching flow path downstream of the inlet, and a controller. The distribution channels includes a hybrid distribution channel. The controller selectively operates in alternative control modes including a flow verification control mode and a flow ratio control mode. In the flow verification control mode, the controller calculates a calibrated value for a reference volume using measurements from a mass flow meter in the hybrid distribution channel, then calculates a target channel calibration value for the mass flow meter in the target distribution channel. In the flow ratio control mode, the controller controls each of the distribution channels, including the hybrid channel, according to a respective flow ratio setpoint for each distribution channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.