Detecting heater failure in a group of electric heaters in a process equipment heating system
US9888526B2 · kind B2 · utility
3Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2015 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Aug 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process equipment heating system has a group of electric heaters and a heater checking system. The heater checking system is configured to determine a resistance value R1 for the group of electric heaters, compare the resistance value R1 with a reference resistance value RR and judge a fault condition if the resistance value R1 differs from the reference resistance value RR by more than a predetermined amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.