LIOS PRE.VENT was carefully designed and thoroughly tested targeting highly reliable performance and smooth operation in industrial environments providing robustness, scalability, and an option to have up to 16 individual channels enabling the coverage of complex infrastructure. And even on large complex installations the LIOS PRE.VENT still provides a cost-effective and yet fully automated data analysis with very precise and accurate temperature mapping.
Using only one single optical fiber, our DTS system covers thousands of measuring points along the sensor cable making the DTS technology far more efficient in installation and maintenance cost compared to other sensor technologies. Furthermore, the fiber can withstand very high temperatures, mechanical and environmental exposures and can, therefore, be used for a very large variety of applications where extreme heat is a challenge: for instance in induction furnaces or chemical reactors.
In combination with our DTS system and a powerful software package, it is possible to get a very detailed cyclic temperature read every few centimeters and store all this data for further analysis. In the case of fiber or DTS failure, our system is still able to monitor the installation due to built-in redundancy, offering an economic solution with less downtime and constant surveillance.
At NKT Photonics we are strong in design engineering and turn complex and customized solutions with different cable designs into simple turn-key solutions. With PRE.VENT flexibility is key and whether the project is reactor monitoring, leak detection, industrial temperature monitoring, or structural monitoring, the LIOS PRE.VENT product line is a reliable cost-effective temperature monitoring solution.
Mean Time Between Failures of 40+ years
Reliability is critical when it comes to DTS systems. With 5,000 DTS systems in operation, we have calculated a remarkable MTBF of 40+ years.
Made from Telcordia-rated components, passive cooling, and no moving parts, our DTS systems are basically maintenance-free. The self-diagnosing features free you from worrying and allow you to focus on other important tasks.
- Measurement range -170°C to +450°C
- ATEX/IECEx certification
- Operating temperature -10°C to +60°C
- Up to 16 channels
- 70 km range per measurement channel
- Mean Time Between Failure of 40+ years
LIOS PRE.VENT covers a broad range of industrial applications offering operational safety, real-time control, and lifecycle optimization of assets like reactors, gasifiers, LNG tanks, containment, and pipelines, as well as ecological engineering projects.
Distance Ranges of LIOS PRE.VENT DTS models
|PRE.VENT -300, -400, -500, -600, -700||30km, 40km, 50km, 60km. 70km|
|Communication Interfaces||2x Ethernet TCP/IP, USB, (optional: WLAN, GSM)|
|Communication Protocols (options)||XML, MODBUS, DNP3, IEC60870, IEC61850|
|I/O Board (optional*)||4 inputs/12 outputs|
|Analogue Sensors Interface Board (optional*)||4x Pt100, 2x 0(4)-20mA and 2x 0-10V|
|Analogue Outputs (optional external module)||4 - 20mA|
*2 optional boards can be installed in total
|Power Consumption, max. (DC / AC options)||40 W/45 W|
|Operating Voltage (DC-1 option)||12 … 24 V DC (-15%/+10%)|
|Operating Voltage (DC-2 option)||24 … 48 V DC (-15%/+10%)|
|Mains Voltage (AC option)||100 … 240 V AC 50..60 Hz / 110… 220 V DC (-15%/+10%)|
Conformity to Standards
|Explosion safety (option)*||EX II (1) G [Ex op is T4 Ga] IIC / II (1) D [Ex op is Da] IIIC / I (M1)
[Ex op is Ma] I
*Qualification in process
|Optical Channels (internal)||1, 2, 3, 4, 6, 8, 9, 12 or 16|
|Fiber Configuration||No loop or termination required|
|Fiber Types||Single-mode 9/125, e.g. ITU-T G.652, G.655 or G.657|
|Laser Classification||Class 1M (IEC60825-1), eye-safe wavelength|
|Sampling Interval||0.25, 0.5 or 1 m|
|Spatial Resolution||1, 2, 3 or 5 m|
|Temperature Resolution, minimum||< 0.1°C|
|Temperature Resolution @ 10dB Optical Loss||< 1°C|
|Measurement Time||1 to 20 min|
*Measurement performance parameters are interdependent
**After calibration on a loose fiber without strain
|Internal SSD Storage||8, 16, 32 or 64 GB|
|Fixed Outputs||Collective fault and alarm|
|Rack Space||19-inch rack, 3 height units|
|Dimensions (HxWxD)||13.3 x 43.9 x 40.3 cm|
|Storage Temperature||-40°C to +85°C|
|Operating Temperature||-10°C to +60°C|
|Humidity (relative)||≤95 % (non-condensing)|
|Protection Class (IEC 60529)||IP51|
Conformity to Standards
|Electrical safety||IEC/UL 61010-1, LV directive 2014/35/EC, CAN/CSA-C22.2|
|EMC*||EN61326-1, EN61000-6-2,3,-4-2,3,4,5,6,8,11,-3-2,3, FCC 47 CFR Ch.1 Part15|
|Hazardous substances, waste||RoHS directive 2011/65/EC, WEEE directive 2002/96/EC|
|Environmental testing*||IEC 60068-2-6,14,27,30|
|Functional safety (IEC61508)*||Hardware design compliant to Safety Integrity Level SIL2|
*Qualification in process