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FF746 Dual IR Flame Detector In Eexd – IIC T6 Flame Proof Housing
Price
R0,00
| Description The FF746 is a IR² flame detector in a flame proof housing. IR² models have execellent response to flame while providing immunity to extraneous sources. New micro-processor technology makes the detectors independent of flame intensity enabling it to operate through smoke, a layer of oil, dust, or water vapor. A high and low sensitivity setting according to EN54-10 is provided. Most IR flame sensors respond to 4.3µm light, emitted by hydrocarbon flames. By responding to 1.0 to 2.7µm light emitted by every fire, all flickering flames can be detected. Gas fires not visible to the naked eye e.g. hydrogen may also be detected. The IR² detectors, responding to adjacent IR wavelengths, enable it to discriminate between flames and spurious sources of IR radiation. The combination of filters and signal processing allows the sensor to be used without risk of false alarms in difficult situations characterised by factors such as flickering sunlight. Dual IR detector High specification units for critical applications IP66 Housing Flame proof housing Low current consumption 2 Wire, 4 – 20 mA and relay operation Latching and non latching operation High / Low sensitivity setting Tolerance to detector window contamination Remote self test facility Microprocessor controlled Immunity to false sources (arc welding, lightning and static) Conforms to EN54: Part 10 |
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