Sulfurization detection resistor
US11506594B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 2020 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Jul 16, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C13/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sulfurization detection resistor includes: a rectangle-shaped insulating substrate; pair of front electrodes formed at both ends facing each other on a surface of the insulating substrate; plurality of sulfurization detection conductors arranged in parallel between the paired front electrodes; plurality of resistors connected between the ends of each of the sulfurization detection conductors and the paired front electrodes; and sulfide gas impermeable protective film that covers all of the resistors and some of the sulfurization detection conductors, wherein each of the sulfurization detection conductors has a sulfurization detection unit exposed from a window hole in the protective film; and by covering the sulfurization detection units with different types of sulfurization rate adjustment layers formed of an acrylic resin, a silicon resin, and the like, timing of disconnection is set so as to vary in response to a cumulative amount of sulfurization in each of the sulfurization detection units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.