LFE10 Siemens

Flame controller LFE10 for supervision of gas flames and luminous or blue-burning oil flames, with intermittent operation and to use with a flame detector QRA... or ionization probe. They are used primarily in conjunction with LEC1 control units on the following applications: 

- Dual-supervision of burners: supervision of the main flame or of the ignition and main flame by 2 identical or different types of detectors, 

- Supervision of forced draft oil, gas burners,  supervision of the flame with different types of detectors, depending on the operating mode, 

- Multiflame supervision: plants with several burners whose flames must be supervised individually by one or several detectors, whose startup and supervision, however, should or must be carried out centrally and simultaneously by only 1 burner control.

Specifications: 

- Complete reference: LFE10

- Plug-in design and consist of power supply section, flame signal amplifier, flame relay, an auxiliary relay for controlling the flame detector or the flame simulation test, and a flame indication lamp located in the unit cover behind a viewing window.

- The electrical circuit is intrinsically safe in connection with LEC1 control unit – is tested in respect of proper functioning each time the burner is started up. The plug-in bases – like the housing – are made of impact-proof and heat-resistant plastic-

- Automatic testing of the flame detector by increasing the operating voltage of the UV tube during the burner off and the purging times of the LEC1 control unit.

- Flame detectors: QRA2..., QRA10..., QRA4.U

- Degree of protection: IP40

- Temperature range: -20...+60ºC