LIOS PRE.VENT Industrial Temperature Monitoring

LIOS PRE.VENT utilizes the most advanced and industrialized DTS providing flexible monitoring solutions for online surveillance of a large array of industrial applications. With customized solutions and easy installation the LIOS PRE.VENT product line accommodates temperature monitoring of chemical processing plants, reactor vessels, gasifiers, induction furnaces, LNG tanks and containments, as well as pipelines, and other infrastructures.

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 case of a fiber or DTS failure our system is still able to monitor the installation due to a built-in redundancy, offering an economic solution with less down-time 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 the reliable cost-effective temperature monitoring solution.

Features

  • 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

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, containments and pipelines, as well as ecological engineering projects.

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Distance Ranges of LIOS PRE.VENT DTS models

PRE.VENT -300, -400, -500, -600, -700 30km, 40km, 50km, 60km. 70km

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
Analogue Outputs (optional external module) 4 - 20mA

*2 optional 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%)

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 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, minimum < 0.1°C
Temperature Resolution @ 10dB Optical Loss < 1°C
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