BST KLC 20, KLC 2002 Technical Information

KLC 20

Technical Information

Wide Band Flame Detector KLC 20

for all kind of oil flames with intermittent burner operations

Short Description

The wide band flame detector KLC 20 is a compact flame detector, which is special designed for

blue burning combustion systems.

flicker frequencies of the flame.

flame signal into digital information to provide an output signal for burner control boxes. All flam

will be detected by an automatic sensitivity control.

maintenance are not necessary!

Due to international standards the flame detector KLC 20 will only detect signals caused by the

flicker of the flame and no signal

These fare signals caused by disturbing light sources, e.g. fluorescent tubes or background

radiation from hot refractories will be cut off, so that unwanted influences are not possible.

The f

lame detector is equipped with an optical interface to get online information about monitoring

of flame signal and serial number.

(formerly known as KLC 2002)

The patented evaluation of the flame signal is based on the

A RISC-

Processor enables the evaluation and conversion of the

Adjustments during commissioning and

from continuous radiation and all kinds of constant frequency.

TB_KLC_20_EN_REV1.DOCX

CE0085BP0001

es

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TB_KLC_20_EN_REV1.DOCX

Safety Instruction

The KLC 20 is a safety component, so it is absolutely forbidden to open, to manipulate or to misuse this
flame detector! Replace the flame detector in case of any damage, fall, shock, moisture, wetness or
influences, which can destroy the flame detector, even though it is not recognizable! Repair works are
strictly prohibited!

Before working at the flame detector switch off the power supply. Before first commissioning or replacement
of the device check the wiring!

Technical Data

Input: AC 230/240 V (-15/+10%)
AC 115 V (optional)
Frequency 50 – 60 Hz
DC 24 V (optional)
Consumption typical 3 – 4 mA
Output: Switch-On Delay after energizing from safety relevant self check to final

operating condition typical 2 sec.
Switch-On delay after Flame On typical 0.5 sec.
Switch-Off time after Flame Off <0.5 sec.
max. switching current 15 mA,

max. switching power 0,3 W

max. switching voltage 280V AC / 400V DC
Optical Features: Spectral range 380 – 1150 nm, Peak wavelength 920 nm
Flicker frequencies 15 – 400 Hz
Switch on frequency: 52 Hz dominant flicker frequency
Switch off frequency: 15 Hz dominant flicker frequency
Acceptable loss of flame signal ca. 280 ms

Disturbing frequency cut off > 35Hz (optionally)
Operating Temperature: -20 to +60 °C
Humidity: max. 95%, no condensation permitted
Optional for higher temperatures
Operating position: any position
Kind of protection: IP 41
Protection Class: II
Protection against
electric shock: DIN EN 60730-2-5 (mounted)
weight: 0.029 kg
max. length of
connection cable: 1 m (optional for longer cables)
Certification: CE0085BP0001 *

* only versions with the function " Disturbing frequency cut off "

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TB_KLC_20_EN_REV1.DOCX

Block diagram

Mounting instructions

The KLC 20 should be mounted close to the flame with straight alignment. The compact flame detector
should be mounted with the mounting flange KLC or another suitable holder with Ø14 mm opening. The
radial adjustment to the flame is realised with the viewing angle adapter KLC and replaces the mounting
flange KLC. Fix the detector with the holder. The best flame signal will be achieved from strong flickering
parts of the flame radiation. The angle of view, especially with sight tubes, must be of appropriate
dimensions to avoid any reduction of flame radiation. Protect the sensor against other light sources.

To avoid any disturbance, do not align the detector direct to the ignition spark. Breakdowns during pre­ventilation procedure may occur. The maximum length of the connection must be in accordance with the
technical data. Install the detector connection cable with most possible distance to the ignition cable.

Attention: For safety reasons and technical regulations a controlled burner shut down of at

least once per 24 hours must be guaranteed.