BPIT, Inc. - D-LE 701 Flame Sensor with Fibre Optic System

D-LE 701 Flame Sensor with Fibre Optic System

By: Durag

Flame sensor with fibre-optic system

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  • Systems for flame monitoring:
    D-LE 701 flame sensor with
    - flexible fibre optic system D-LL 701
    - rigid fibre optic system D-LL 702
  • Self-monitoring and fail-safe flame sensor with a fibre-optic connection (in conjunction with a control unit/burner control)
  • Monitoring of gas, oil and coal flames
  • Connection to the D-UG 120, D-UG 660 control unit and the D-GF 150 burner control
  • Spectral range from UV to IR
  • Uniform output signal thus mutually interchangeable
  • Adjustable to different combustion technologies such as exhaust gas recirculation


  • Burners with difficult installation conditions for conventional flame sensors or on those whose environmental temperature near the sighting tube is too high
  • Power stations
  • Chemical industry
  • Refineries
  • Cement plants
  • Waste incinerators
  • Steam generators
  • Heating plants


Operation mode: Intermittent operation, continuous operation and 72-hour operation without permanent supervision
Safety: Self-monitoring and fail-safe in conjunction with a control unit/burner control
Gain: four settings
High-pass filter: three settings
Spectral ranges: UV, VIS, IR
Protection: with cable gland (D-LE 701…-CG) IP65,
with axial plug (D-LE 701…-P) IP67
Perm. ambient temperature: -20…+60°C
Dimensions: 160x185x100 mm (WxHxD)
Weight: approx. 1.2 kg