Fluid pressure control apparatus and system
US11215588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2019 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Jul 8, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/328
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid pressure control apparatus includes a proportional solenoid valve operatively connected between a fluid inlet and a fluid outlet and a pressure sensor fluidically coupled to the fluid outlet, wherein an electronic controller generates and outputs a control signal to the solenoid valve in dependence on a first signal from the pressure sensor and a second signal corresponding to a pressure set point, where the solenoid valve has a rest position between opened and closed, and the electronic controller is further adapted to generate the control signal with either of opposite polarities to move the valve in either of opposite directions from its rest position in order to reduce power consumption and heat generation, in particular for use in gas analysis equipment located in hazardous areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.