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2.2 Principles of Operation
SafeFlame’s triple IR (IR3) flame detector compares three specific wavelength bands
within the IR spectral range of a fire and their ratio to each other. This offers fast
response without the fear of typical false alarms. One sensor monitors the 4.4
micrometer range and the other sensors monitor the bands above and below.
This advanced technology allows the detector to distinguish between non-flame IR
sources, and flames that emit hot carbon dioxide in the combustion process (which
have a spectral characteristic peak at 4.4 micrometers). As a result, both detection
range and immunity to false alarms can be significantly increased. The SafeFlame IR3
detectors can detect a 0.1m² (1ft²) gasoline pan fire at up to 65m (215ft) in less than 5
seconds.
SafeFlame’s IR3 detector is designed to ignore constant background IR radiation,
which is present in all environments. Instead it measure the modulated part of the
radiation of a fire.
2.2.1
IR3 Flame Detector
2.2.2
RS-485 Modbus
The SF200A/SX is capable of connecting to any RS-485 communication network by
connecting to a universal controller. The detector is capable of informing the network of
the current product condition (fire, fault, warning) and can be used in synch with
interlinking remote control.
2.2 Principles of Operation
2.3 Detector Performance Options
2.3.1
Cone of Vision
The SF200A/SX have a field of view of 90° horizontal, 90° vertical.
SafeFlame Installation and Operation Manual
(Publication#: MA-SF200OM)
