PLC Technology
Optical monitoring systems

Distributed Temperature Sensing System DTS TOPAZ

Distributed Temperature Sensing System TOPAZ (DTS TOPAZ) is designed for measurement, registration, possessing, display, and transmission to the upper levels the information about continuous temperature profile along the length of connected fiber-optic cable. DTS TOPAZ could be used as a stand-alone solution and as a part of centralized monitoring system of an energy company.

DTS TOPAZ is a complete and ready to use device: it is equipped with components necessary to organize the communication and to ensure the collection and transmission of tele-information in full. DTS TOPAZ is based on the standardized principles of display systems. It has open, scalable and extensible architecture based on IEC standards and open data exchange protocols.
  • Description
  • Specifications


Main advantages of DTS TOPAZ:

  • Detection of events (overheating, breakage, etc.) and their geodetic coordinates;
  • Function of cable line’s load forecast for load balancing  
  • Archive of cable line’s temperature profiles to track the long-term dynamics of temperature anomalies
  • Application in digital substations




Maximum fiber length

40 km

The range of lengths during the detection (depending on the modification)

1÷40000 m

Number of measurement channels

Up to 16 pcs.

Measurement step along sensor’s length

From 0,25 to 1,0m

Minimum time of a single measurement

3 sec

Resolution capability of temperature measurement

0,005 °С

Operating mode stabilization time, no more than

10 min

The accuracy of determining the breakage

±1 m

Type of optical fiber

MM (type 50/125 or 62,5/125 ITU-T G.651)

SM (type 9/125  ITU-T G.652 or ITU-T G.654)

Optical connectors

E2000-APC or FC/APC

Wavelength of the radiation source

from 975 to 1550 nm

Operating mode


Presence of moving parts



RS232/RS485, USB, RJ45

Exchange protocols

IEC 61850-8-1 MMS, IEC 61850-8-1 GOOSE, IEC 60870-5-104, DNP3, Modbus TCP, МЭК 60870-5-101, Modbus RTU, SNMP v1/v2/v3, OPC DA 2.05a (3.0), VISA

Communication redundancy protocols


Database interaction technology


Data storage depth

Not more than 20 months

Supply voltage (depending on the modification)

100÷265 АС V

10÷30 DC V

Power consumption, max:


Battery life (if there is UPS)

8,5 hours

Ambient operating temperature

-60 ... +70 °C

Average life time, at least

25 years

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