Through fiber optic sensor technology and a very simple form of setup the LIOS PRE.VENT offers excellent distance range and measurement performance even in the largest and most complex structures.
The maintenance free industrial design operates in temperatures from -10 to 60°C. With a very low energy consumption and network integration possibilities, the monitoring equipment can easily be installed in the most remote locations; ideal to monitor very long infrastructure as rail tracks, offshore assets, pipelines, dykes and dams, bridges, etc.
The LIOS PRE.VENT system is a series of controllers for distributed structure monitoring (DSM) that is based on a proprietary Brillouin measurement technology. Its major advantages are the excellent distance range and measurement performance. It exhibits a superior strain and temperature resolution and accuracy in comparison to other technologies. The excellent performance is achieved in both single- and double-ended fiber configurations.
The DSM series is designed for autonomous operation without PC and comprises an internal SSD (solid state drive) for an independent and continuous storage of measurement and event data.
The DSM series is fully integrated with the Charon4 software suite for easy configuration, long term data storage, and enhanced visualization. Data from LIOS PRE.VENT controllers and other sensors are easily combined in the database to enable an efficient monitoring of complex power cable installations using various sensing systems with different distance range and/or measurands.
Features
- Broad portfolio of industry assets can be measured
- Permanent monitoring of thousands of measurements points
- Easy fitting of sensor cable to large structures
- Superior hotspot and strain detection
Distance Ranges of LIOS PRE.VENT models
| PRE.VENT -050, -100, -200, -300, -400, -500 | 5 km, 10 km, 20 km, 30 km, 40 km, 50 km |
Data Storage/Communication/Interfaces
| 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 |
*2 optional internal boards can be installed in total
Electrical Data
| 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%) |
Environmental Data
| 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 data
| Optical Channels (internal) | 1, 2, 3, 4, 6, 8, 9, 12 or 16 |
| Fiber Configuration | No loop or termination required |
| Optical Connector(s) | E2000/APC |
| 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 |
Measurement Performance*
| Sampling Interval | 0.25, 0.5 or 1 m |
| Spatial Resolution | 1, 2, 3 or 5 m |
| Temperature Resolution @ 10dB Optical Loss | < 1°C |
| Strain Resolution, minimum | < 2 με |
| Strain Resolution @ 10dB Optical Loss | < 20 με |
| Temperature Accuracy | 2°C** |
| Measurement Time | 1 to 20 min |
*Measurement performance parameters are interdependent
**After calibration on a loose fiber without strain
Data Storage/Communication/Interfaces
| Internal SSD Storage | 8, 16, 32 or 64 GB |
| Programmable Inputs/Outputs | 4/10 |
| Fixed Outputs | Collective fault and alarm |
Mechanical Data
| Rack Space | 19-inch rack, 3 height units |
| Dimensions (HxWxD) | 13.3 x 43.9 x 40.3 cm |
| Weight | 15 kg |
Environmental Conditions
| 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
