Process control instruments having local intrinsic safety barriers and methods of manufacturing the same
US12355235B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2023 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Sep 27, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K37/0066
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Process control instruments having local intrinsic safety barriers and methods of manufacturing the same are disclosed. An example field instrument for a process control assembly includes a non-protection compartment, intrinsically safe circuitry positioned in the non-protection compartment, a protection compartment, non-intrinsically safe circuitry positioned in the protection compartment, and local barrier circuitry positioned in the protection compartment to operatively couple the non-intrinsically safe circuitry to the intrinsically safe circuitry, the local barrier circuitry to prevent the intrinsically safe circuitry from receiving an electrical energy that is greater than an electrical energy threshold from the non-intrinsically safe circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.