Method and device for detection of multiple flame types

Method and device for detection of multiple flame types

A flame detector (100) includes an infrared detector (110) and a first window (120) covering the infrared detector. A second window (125) is positioned in front of the first window. The flame detector is adapted to reject light having a wavelength below approximately 2 µm and to reject light having...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Larsen, Christopher Scott, Cole, Barrett E
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ALARM SYSTEMS
BLASTING
COLORIMETRY
COMBUSTION APPARATUS
COMBUSTION PROCESSES
HEATING
LIGHTING
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
MECHANICAL ENGINEERING
ORDER TELEGRAPHS
PHYSICS
RADIATION PYROMETRY
REGULATING OR CONTROLLING COMBUSTION
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
WEAPONS
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Beschreibung
Zusammenfassung:A flame detector (100) includes an infrared detector (110) and a first window (120) covering the infrared detector. A second window (125) is positioned in front of the first window. The flame detector is adapted to reject light having a wavelength below approximately 2 µm and to reject light having a wavelength above approximately 6µm, allowing detection of flame from multiple sources. In variations, the windows in combination with the infrared detector may provide the rejection or a band pass filter (130) provides the rejection. Still further variations utilize notch filters or a band reject filter to provide notches of light to the infrared detector corresponding to the wavelength of different flame sources to be detected.