Applications
BG-21 is a point flame detector for detection of fires involving combustion of carbonaceous materials.
The detector has a high IP rating making it suitable for the harshest environments.
The detector can be used with most conventional fire alarm panels giving alarm on the current increase principle. An alarm resistor must be fitted between terminal 3 and 4. The value of the alarm resistor can be dimensioned for correct alarm current depending on the panel.
Performance class can be configured by the system according to table 1.
The advanced signal processing and DYFI+ intelligence ensure that the detector has a high immunity to any nuisance alarm source combined with fast detection of real fires. This makes the BG-201 detector the obvious choice for demanding applications such as a ship’s engine room
Note:Accumulation of water, ice, snow or other pollution on the window may affect the sensitivity of the detector. In order to maintain the detection range (table 1), clean the glass regularly.

Features
Conventional
Can be used with different conventional fire alarm panels.
Different sensitivity settings possible
Comprises a built-in alarm indicator (LED)
Solar resistant
Fast detection of hydrocarbon fires
Not blinded by oil film on window
High degree of immunity to false alarm sources
EN54-10 approved
Approved to the requirement of the major maritime classification societies

Technical specifications
Weight 210 g
Materials Polycarbonate, sapphire glass, electronic components
Colour Transparent / light grey
Sensitivity Ref. table 1
Field of view Horizontal=+/-45°, Vertical=+30°/ -45° (see the Field of view diagram below for
additional EN 54-10 Information)
Voltage: 10-26 VDC
Current consumption: Stand by
Current consumption: Alarm LED on
90 μA
2,1 mA
Degree of protection IP66 and 67
Working temperature -40 to +70°C
Storage temperature -40 to +70°C
Humidity 0-96% rh, can withstand 100% condensing humidity for short periods of time
Maintenance Cleaning of window
Service Replace if faulty
Approvals See web site
Cable size, (cable gland) 6-12mm
Wire size (terminal block) Maximum wire 2,5mm2 / AWG14