D-LX 710
Compact flame monitor
Self-monitoring and fail-safe compact flame monitor for the monitoring of gas, oil and coal flames with integrated UV, VIS or IR flame sensor, primarily in single burner view applications.
Application with
Overview
- For ambient temperatures from -40°C up to +75/70°C, certified and without need for accessories to isolate, heat or cool.
- Highest safety combined with highest availability
- Ideal support for Functional Safety within safety chains up to SIL3
- Flame signal output as changeover relay (SPDT, 1 x NO, 1 x NC)
- Local display of settings and operational status for the whole ambient temperature range, visible for all versions at a single glance
Your Benefit
- Easy adjustment
The easy access to the available adjustments shortens time for commissioning - Versatile detection
The choice of available detectors allows for the monitoring of flames of all fuels within the same device family - Versatile for the most variable application conditions
The same device technology can be used without change for the most different geographical regions and based on varying systems of standards - Flexible for changed requirements
If the requirements of the plant change (ex, zones, need for fibre optic systems) it usually is possible to adapt via a replacement within the same device family - Flexible operation support
The possibility to adapt device settings also outside the factory enables fast local replacements with smaller stocks of replacement devices
Applications
- Simple combustion plants with single burners or optically separated burners
- Combustion processes with continuous operation
- Thermal processing plants
- Chemical industry
- Refineries
- Waste incinerators
- Petrochemical plants
- Steel industry
- Steam generators
- Heating plants
Technical Data
| Operational mode | Intermittent operation or continuous operation |
| Safety | Self-monitoring and fail-safe, supports safesupports safety chains up to SIL3 |
| Auxiliary supply | 24 VDC, 7W, PELV |
| Flame relay | 1x NO contact, 250 VAC, 2 A 1x NC contact, 250 VAC, 2 A |
| Status relay | 1x NO contact, 250 VAC, 2 A |
| Flame Failure Detection Time (FFDT) | 0.5 ... 5 s (adjustable in steps of 0.5 s) |
| Analogue output | 0/4...20 mA, 750 Ohm max. |
| Spectral ranges | UV, VIS, IR |
| Number of ranges | 1 |
| Threshold switch | Flame intensity |
| Viewing angle | 6° (with fibre optic System) |
| Communication | LEDs, always visible at a glance for all versions |
| Perm. ambient temperature | -40...+75°C |
| Protection class | IP66/IP68 IP65 (/MP7) |
| Dimensions | 100 x 100 mm, length approx. 180 mm (housing M5) |
| Weight (w/o cable) | approx. 1.3 kg (housing M5) |
| Ex protection | |
| D-LX 710 ../M4/84Ex | II 2G Ex db IIC T6 or T5 Gb II 2D Ex tb IIIC T85°C or T100°C Db |
| D-LX 710 ../M4/85Ex | Cl. I, Div. 1, Gr. A, B, C, D T6/T5 Cl. II, Div. 1, Gr. E, F, G T6/T5; Class III Type 4 Hazardous locations: indoor/outdoor |
| D-LX 710 ../M5/86Ex | Cl. I, Div. 2, Gr. A, B, C, D T6/T4 Cl. II, Div. 2, Gr. E, F, G T6/T4; Class III Type 4 Hazardous locations: indoor/outdoor |
| D-LX 710 ../M5/87Ex | II 3G Ex nA nC IIC T6 or T4 Gc II 3D Ex tc IIIC T85°C or T135°C Dc |
| Protection class | IP66 |
| Dimensions | Ø120 mm, length appr. 230 mm (/M4/84Ex, /M4/85Ex) 100 x 100 mm, length approx. 180 mm (/M5/86Ex, /M5/87Ex) |
| Weight | approx. 3.0 kg |
Accessories
- Digital display for optimal adjustment of the flame sensors by measuring the pulse rate and its extreme values (D-ZS 087-20)
- UV-A, UV-B and IR test light source 230 V/50 Hz (D-ZS 093)
- Terminal box for connecting the flame monitor (D-ZS 140-12 / 141-12)
- Wide range power supply unit for supply of several D‑LX 710 (D-NG 24/25a)