F152 - Flame Monitoring Device

Flame monitoring device

Digital flame frequency evaluation in the range of 10 – 200 Hz

Approved for continuous operation

Plug-in module for top hat rail mounting

Two -channel system with electronic self-monitoring

LED based status display

Measurement output for intensity 0-20mA

No modifications needed for country-specific mains frequencies

SIL 3 DIN as per EN 61505-2


The F152 is housed in a plug-in module for top hat rail mounting and together with the scanner FFS07 / FFS08 forms a safety device for optical monitoring of burner flames without complicated selection tasks. The flame monitoring device F152 is designed as a two-channel system with electronic self-monitoring. Adaptation to country-specific mains frequencies is not necessary, as they are suppressed by sliding fade-out. It has digital flame frequency evaluation and LED status displays. In addition, the device is supplied with a measuring output for intensity in the range 0-20 mA.

The FFS07 and FFS08 scanners are equipped with sensors for IR or UV range according to customer requirements. The system is suitable for monitoring tasks without high selection requirements for single and multi-fuel burners in heating plants and process furnaces that are operated with oil, gas, biomass, dust or process gases.
The flame monitoring device F152 and the probes FFS07 and FFS08 are certified according to IEC61508 part 2 according to SIL 3 and comply with the standards DIN EN 298 for gas operation and DIN EN 746-2 for process plants. The requirements of the Pressure Equipment Directive (2014/68/EU) and Gas Appliances Directive (2009/142/EC) are also met. An Ex-I certificate for the FFS07 scanner is also available.

Selection criteria:


Spectrum / nm

Preferred application / fuels

FFS 07 / 08 UV-1

260 ... 400

Oil, gas

FFS 07 / 08 UV-4

215 ... 360

Oil, gas (special gases as refinery and blast furnaces)

FFS 07 / 08 IR-1

1.200 ... 2.800

Oil, gas, firing with high flue gas recirculation, waste gases with yellow color without UV radiation

Technical data:

Power supply voltage:

230 VAC +10 %, -15 %
115 VAC +10 %, -15 %

Flame and signal contact:

Changeover switch, floating

Mains frequency:

10 Hz ... 200 Hz

Safety time "operation":

t ≤ 1 s (standard)

Mode of operation:

Continuous operation

Protection class:


Operation temperature:

-10 °C ... +60 °C


114x120x45 mm (HxWxD)


0,5 kg