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US 8,283,646 B2Granted
Flame detector personality module
AssigneeHoneywell International Inc.
InventorsJames M. Murphy, Scott R. Lang
Life of this patent
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Abstract
A flame detector includes a sensor module, which carries a plurality of pyroelectric sensors, and a filter module which carries a plurality of replaceable filters with one filter being associated with each sensor. The modules are coupled together and carried in an exterior housing. A cover can overlay the filters to retain them in predetermined positions relative to the respective sensors.
Claims19
A modular flame detector comprising:
- a sensing module that carries a plurality of radiant energy sensors;
- a filter module that carries a plurality of different filters with each of the filters being associated with a respective one of the sensors, the filter module defining a first plurality of optical paths extending through respective ones of the filters;
- and
- a cover defining a second plurality of optical paths with each of the second plurality of optical paths being associated with a respective one of the first plurality of optical paths,
- wherein incident radiant energy enters the detector by passing through at least one of the second plurality of optical paths in the cover and reaches a respective one of the sensors by passing through a respective one of the first plurality of optical paths in the filter module.
2 more elements
A flame detector comprising:
- a housing;
- a sensor module which carries a plurality of radiant energy sensors;
- a filter module which carries a filter associated with each sensor, the filter module defining a first plurality of optical paths extending through respective ones of the filters;
- a cover defining a second plurality of optical paths, each of the second plurality of optical paths associated with a respective one of the first plurality of optical paths;
- and
- a coupling element for coupling the modules together,
- wherein incident radiant energy enters the detector by passing through at least one of the second plurality of optical paths in the cover and reaches an associated sensor by passing through a respective one of the first plurality of optical paths in the filter module.
4 more elements
Dependencies are inferred from the claim text.