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InstallatIon anD opERatIon manual
25-17603-C
March 2023 www.eaton.com
2. About the EF-CBD130
2.3. Product Appearance
2.4. Principle of the Beam Detector
In a fire, when smoke enters the path of the beam detector, some of the light
is absorbed or scattered by the smoke particles. This decreases the received
signal, leading to an increase in optical obscuration. This unit decodes the received
signals and compares to the pre-programmed algorithm stored on the processor.
Through this algorithm the detector will take appropriate action and activate the
corresponding relays and LED indicators.”
To avoid false alarms the detector and reflector should be mounted on a solid
structure, care should be taken to avoid obstructing the path of the beam. Refer to
Figure 1.
In operation mode, the unit continually emits light, care should be taken that the
activities in the space do not obstruct the beam or move the device to avoid false
operation of the detector. Refer to Figure 1.
Smoke
Fire Status
Beam
Detector
Mounting
Bracket
Reflector
Beam
Detector
Mounting
Bracket
Normal Status
Reflector
Figure 1 . Beam detector principle 2 Installation procedures
2. About the EF-CBD130
