Sensors and Systems for combustion technology

Compact flame monitor F200K

Compact Flame Detector F200K
  • Compact case with integrated flame sensor and switching amplifier
  • Intensity adjust in multiple steps
  • Digital circuit design for flame evaluation
  • Status indication by LEDs 24 V DC operating voltage
  • Two electronic channel system for fail safe operation and supervision
  • LED bar flame intensity indication and 4 (0) ... 20 mA analog output
  • LED bar trend indication selectable for an optimum adjustment to the flame direction

Supply voltage

24 V DC ± 20%, ≤ 4 Watts


Relay contact output

permissible switching voltage

max. 50 V DC min. 6 V AC/DC

SPDT, isolated

permissible current switching.

max. 0,5 A min. 1,0 mA

Frequency range

10 ... 190 Hz (F 200 K1...)

10 / 20 / 30 ... 190 Hz (F 200 K2...)

Safety time 'operation'

t ≤ 1s (standard)

t ≤ 3 sec. (on request, factory setting)

Operating condition

for continuous operation


Protection class

IP 67


Operating temperature

- 20 ... + 60°C



0,6 kg



total length: 180 mm

diameter: 40 mm / 80 mm

In single-burner and multiple-burner furnaces, the flame detector performs a high-safety monitoring of the burner flames. When the flame switches off, the safe control state "Flame off" is reached.

The flame detector is mainly used in large-scale power plants, thermal power stations and chemical plants as well as for monitoring furnaces which are operated with:

  • Oil
  • Gas
  • Bio-mass
  • Dust coal
  • Chemicals and other waste products


Band of spectral radiation in nm

Prefered area of use / fuel

F200K1 UV-1
F200K2 UV-1

260 ... 400

Oil, gas

F200K1 UV-2
F200K2 UV-2

210 ... 380

Oil, gas (special gases of refinary- or blast furnaces)

F200K1 UV-3
F200K2 UV-3

F200K1 IR-2
F200K2 IR-2

850 ... 1200

Oil, gas, coal, firing with high flue gas recirculation,
waste gases with yellow colour without UV-radiation
respectively with absorbtion of the UV-radiation by
vapor or dust etc.

F200K2 IR-1
F200K2 IR-1

1200 ... 2800

Coal dust