The FDU series provides OEMs, burner manufacturers, and end users with a state-of-the-art flame monitoring capability for gas burners across a wide range of applications – from hot-air furnaces and gas-fired boilers to industrial furnaces and excess-gas flaring installations.

Replacing the IFW 15/50, Honeywell's R4343, and BC1000 flame relay models, the new FDU enables multi-flame control or multi-point monitoring in conjunction with burner control units (BCUs) such as the BCU 560 or a failsafe PLC with a standard-compliant flame monitoring device.

The FDU 520 monitors gas burners in continuous/permanent operation (applications of more than 24 hours). The compact footprint of these units means that they can be easily integrated and mounted with other equipment in a cabinet, providing convenient access for maintenance and repair. The FDU can be installed on a DIN rail in the control cabinet. Plug-in connection terminal strips on the FDU make it easier to install and remove.

The flame detectors are also suitable for multi-point burner monitoring and multi-flame control when used with a Kromschröder BCU 5 series

Using the BCSoft program and the optional opto-adapter PCO 200, it is possible to set parameters to suit an application and also to read analysis and diagnostic information from the flame detector.