Company Information

Website: www.optoelectrotek.com

Email: sales@optoelectrotek.com

            info@optoelectrotek.com

Product Manual

2025.02

Fully Distributed Temperature Measurement

Continuously acquires temperature distribution along the entire sensing fiber.

Fine Spatial Sampling

Spatial sampling interval down to 0.1 m.

Up to 30 km

Covers long-distance scenarios such as cable tunnels, utility tunnels and pipelines.

Wide Temperature Environment Option

Standard 0 ~ 40 °C, optional -40 ~ 50 °C.

01  Product Overview

DTS Temperature Distribution Monitoring

Raman scattering plus OTDR positioning for continuous temperature monitoring and hotspot location in long-distance linear facilities.

RAMAN / OTDR

READY

System Introduction

Fengxing FXDTS DTS continuously measures temperature distribution along the entire sensing fiber in real time and records temperature trends.

It features strong EMI immunity, high accuracy and long coverage; with the intelligent optical cable O&M platform, application and O&M become simpler and smarter.

Full-Line Temperature Distribution

Collects full-line temperature data to generate curves / distribution maps.

Precise OTDR Location

Uses echo time information to locate temperature points for hotspot troubleshooting.

Long-Distance Monitoring

Up to 30 km measurement distance, suitable for linear facilities.

Fine Spatial Sampling

0.1 m spatial sampling supports fine positioning.

Environmental Adaptability

Standard 0 ~ 40 °C, optional -40 ~ 50 °C.

Platform Integration Capability

Interfaces with IoT, apps, monitoring, cloud and analytics systems by project configuration.

Series

Positioning

Applicable Fiber

Typical Measurement Distance

Sampling Interval

MM

Multimode Series

50/125 or
62.5/125

≤ 10 / 10 ~ 20 /
20 ~ 30 km

0.1 ~ 2 m

SM

Single-mode Series

9/125

≤ 10 / 10 ~ 30 km

0.1 ~ 2 m

Power Cables / Cable Tunnels

Online temperature monitoring and hotspot location for cables, tunnels and trenches.

Utility Tunnels / Metro

Temperature monitoring and early fire warning for long-distance linear facilities.

Petrochemical Pipe Racks / Tank Farms

Temperature monitoring for pipe racks, pipelines and tank farms.

Other Industrial Scenarios

For industrial scenarios requiring long-distance continuous temperature distribution measurement.

02  Series & Technical Parameters

A.  FXDTS-MM Multimode Fiber Series

Feature: For 50/125 or 62.5/125 multimode fiber; typical distances: ≤10 km, 10~20 km and 20~30 km.

Parameter

FXDTS_MM_S

FXDTS_MM_M

FXDTS_MM_L

Measurement Distance

≤ 10 km

10 ~ 20 km

20 ~ 30 km

Applicable Fiber

50/125 or 62.5/125

Spatial Sampling Interval

0.1, 0.2, 0.4, 1 m

0.4, 1, 2 m

1, 2, 4 m

Temperature Resolution

0.01 °C

0.03 °C

0.2 °C

 Note: MM series is for multimode sensing fiber; performance depends on fiber loss, connection quality, environment and acquisition time.

B.  FXDTS-SM Single-mode Fiber Series

Feature: For 9/125 single-mode fiber; typical distances: ≤10 km and 10~30 km.

Parameter

FXDTS_SM_S

FXDTS_SM_L

Measurement Distance

≤ 10 km

10 ~ 30 km

Applicable Fiber

9/125

Spatial Sampling Interval

0.1, 0.2, 0.4, 1 m

0.4, 1, 2 m

Temperature Resolution

0.05 °C

0.2 °C

 Note: Measurement time depends on distance; software, interfaces and data display follow project configuration.

Laser pulses are injected into the sensing fiber. Raman scattering is temperature-related, and backscattered light with OTDR positioning calculates temperature at each location to form curves / distribution maps.

03  Environment, Structure & Platform

Parameter

Value

Unit

Operating Temperature

0 ~ 40 (standard)  |  -40 ~ 50 (optional)

°C

Operating Humidity

10 ~ 85 (non-condensing)

%RH

Power Supply

100 ~ 240

VAC

2U desktop integrated host (rack / desktop installation supported)

Software Platform Capabilities

•  IoT, app and monitoring system integration

•  Cloud platform and data analysis system integration

•  Per project technical confirmation document

Deployment Confirmation Items

•  Fiber type and target distance

•  Sampling interval, temperature resolution and acquisition time

•  Interfaces, power supply and environmental grade

 Note: Confirm fiber type, distance, sampling interval, software interfaces and field environment requirements during project initiation or technical confirmation.

04  Ordering Information               

Naming Examples

•  FXDTS_MM_S (multimode, ≤ 10 km)

•  FXDTS_MM_L (multimode, 20 ~ 30 km)

•  FXDTS_SM_S (single-mode, ≤ 10 km)

•  FXDTS_SM_L (single-mode, 10 ~ 30 km)

Ordering Checklist

•  Measurement distance and fiber type

•  Sampling interval and temperature resolution

•  Application scenario and installation method

•  Interfaces, power supply and environmental rating

•  Need for software platform or system integration