Flame Sensor - elco EKEVO N6.2400 GL-E Original Operating Instructions

Commissioning

Flame sensor

The flame sensor is a component of the
flame monitoring system.
In interaction with the automatic
combustion control unit, it suppresses
stray flame during burner start-up and
monitors the presence of flame during
burner operation.
Table: flame sensor
Description Spectral
range
FFS 08 (IR) IR
FFS 08 UV-1 UV
FFS 08 IR-1 T IR
QRA-2 KPL UV
Ionisation -
IRD 1020 IR
The appropriate type of flame sensor is
selected based on the spectral range of
the flame radiation, the mode of
operation required and the burner
controller used.
For the electrical connection, please
refer to the electrical diagram and the
supplementary information for the
individual flame sensors contained in the
manufacturer's documentation.
Note:
The flame sensors must be regularly
inspected for dirt and cleaned as
necessary. The sensor windows of the
optical flame sensors must be kept free
of dust. The ionisation rods must be
checked for burn-up and replaced if
necessary.
Depending on the requirements of the
burner and fuels, the flame sensor may
be an optical sensor that monitors light
radiation in the ultraviolet, infrared or
visible spectrum emitted by the flame.
Area of use Connection
Fuel-oil, gas and Etamatic
dual fuel burners
Fuel-oil, gas and BT300 + F152
dual fuel burners conversion
module
Fuel-oil, gas and BT300 + F152
dual fuel burners conversion
module
Gas and dual fuel
burners
BT300
Gas burners
Fuel-oil, gas and
BT300
dual fuel burners
QRA2
Using a UV probe for flame
monitoring
With this monitoring method, the
UV radiation from hot flame gases is
used to create the flame signal.
A radiation detector is a UV-sensitive
tube with two electrodes to which
voltage is constantly applied. When
illuminated with light from the 190...270
nm range of the spectrum, it fires and
applies current to the flame signal
amplifier. The UV tube does not react to
the after-glow of fireclay in the furnace,
sunlight, daylight or the lighting used to
illuminate the boiler room.
03/2016 - Art. Nr. 4200 1044 8002A
In some gas burners, flame monitoring
is achieved by means of ionisation. In
this case, no optical flame sensor is
present.
The flame sensors used are listed in the
table below.
Operating mode Manufacturer
Continuous operation Lamtec
Continuous operation Lamtec
BT340 - Intermittent/ Lamtec
continuous operation
intermittent Siemens
BT340 - Intermittent/ Lamtec
continuous operation
BT340 - Intermittent/ Satronic
continuous operation (Honeywell)
The tubes have a service life of approx.
10,000 hours at ambient temperatures
of up to 50°C; higher ambient
temperatures reduce the service life
considerably.
Cleaning the probe
The UV sensor window must be
checked at regular intervals for dirt,
and then cleaned. The sensor window
must be kept free of dust. If this measure
proves unsuccessful, the tubes must be
replaced.
Comments
Sensitivity setting
LED display for operating
status, sensitivity setting
LED display for operating
status, sensitivity setting
Operating status, sensitivity
setting
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