Process calibrator
US10156880B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Dec 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/33331
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A process calibrator is formed with functions of a fieldbus communicator. Preferably, functions of a fieldbus communicator support several fieldbus protocols, and it is provided such that the use of it does not hamper the functioning of a process calibrator. This has been achieved by providing the process calibrator with a pair of fieldbus connecting terminals for measuring of the fieldbus signal. The process calibrator comprises a processor, and the pair of fieldbus connecting terminals comprises a signal terminal and a ground terminal. The process calibrator further comprises at least two parallel fieldbus protocol units between the processor and the signal terminal of the pair of fieldbus connecting terminals. Each fieldbus protocol unit is dedicated to its respective fieldbus protocol. Further, the process calibrator comprises a selection unit for selecting a fieldbus protocol unit and a voltage unit for being between the terminals of said pair of fieldbus connecting terminals, which voltage unit is arranged to adjust the voltage and the impedance according to the selected fieldbus protocol unit. The selecting unit is controlled manually through the user interface. The user int…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.