Flame sensor verification
US5722822A · kind A · utility
61Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1995 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | May 3, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q23/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Method and apparatus are disclosed for checking the responsiveness of a circuit which senses the presence of a flame produced by a burner within a furnace. A programmed processor associated with the circuit measures the time the circuit takes to indicate the presence of a flame. A warning is generated when the measured time exceeds a predetermined allowable time. The allowable time is determined by taking into account the decreased responsiveness of an electrode that indicates the presence of the burner flame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.