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D-LE 701
Optical flame sensor
UV, VIS or IR flame sensor for combination with fibre optic systems and a control unit or burner control. For optical monitoring of all fuel flames, including in complex multi-burner plants.
Functionality: Optical flame monitoring
Features
- Adjustable to different combustion technologies, e.g. flue gas recirculation
- Flame sensor for every spectral flame monitoring range from UV to IR
- Self-monitoring and fail-safe in conjunction with a control unit / burner control
- Connection to the D-UG 120, D-UG 660 control units and D-GF 150(-MB) burner control
For application with flexible fibre optic system D-LL 701 / rigid fibre optic system D-LL 702
Benefits
- Easy access to the available settings reduces the time required for commissioning
- Selection of the available detectors allows the monitoring of flames of all fuels within the same device family
- Device technology proven thousands of times over
Applications
- Complex combustion plants including plants with many burners and different fuels
- Combustion processes in continuous operation
- Combustion processes with very high temperatures at the burner plate
- Combustion processes with very strong vibrations at the burner plate
Technical Data
- Technical data
| Spectral sensitivity | UV, VIS, IR |
|---|---|
| Operating mode | Intermittent operation and continuous operation |
| Functional Safety | Self-monitoring and fail-safe in conjunction with a control unit or burner control, supports safety chains up to SIL 3 |
| Setting | Max.: Input filter LIN/LOG, 4 gains, 3 high pass filters |
| Ambient conditions | -20 … +60 °C |
| Degree of protection | With cable gland (D-LE 701…-CG): IP65 With axial plug-in connector (D-LE 701…-P): IP67 |
| Dimensions | 160 x 185 x 100 mm |
| Weight | Housing (without cable) approx. 1.2 kg |
Accessories
- Mandatory
- Optional
| D-LL 7xx |
| D-ZS 093 - UV-A, UV-B and IR test light source 230 V/50 Hz |
| D-ZS 087-20 - Digital display for measuring the pulse rate and its extreme values |
| D-ZS 140 - Terminal box for connecting flame sensor |