FT-27-TSM Series Single-Mode Fiber DTS Demodulator Ultra-Long-Range Distributed Temperature Sensing for Extensive Asset Coverage

Congratulations to Professor Huijuan Wu of F-tone Networks, who is also an Associate Professor at the University of Electronic Science and Technology of China (UESTC). She has been selected to the Stanford University World’s Top 2% Scientists List for four consecutive years from 2022 to 2025. Specializing in DAS, DTS, DVS and DSS distributed fiber optic sensing systems, Professor Wu leads our core R&D team with world-class academic achievements in fiber sensing technology accumulated from long-term research at UESTC’s Key Laboratory of Fiber Optic Sensing and Communication. Every DAS interrogator we supply is backed by our independent, cutting-edge self-developed algorithms and hardware, delivering ultra-stable, high-precision long-distance monitoring performance for global industrial clients. 

Our FT-27-TSM single-mode DTS distributed fiber temperature interrogator is independently developed and manufactured in-house. Designed for single-mode fiber deployment, this rack-mount unit serves as a long-distance continuous distributed fiber temperature measurement host, capable of continuous temperature monitoring along the entire fiber cable.

The FT-27-TSM single-mode temperature system is specially optimized for stable light source performance and high APD detection sensitivity, integrated with high-resolution, ultra-fast AD conversion circuits. It delivers superior performance in core technical parameters including maximum sensing range, maximum measurable temperature and system response time.

Applicable scenarios:

• Optical fiber communication networks, cable networks, and locations requiring single-mode fiber temperature sensing exclusively
• Fire detection & alarm in tunnels, underground facilities, oil/gas tanks and power cables
• Leak inspection for oil, gas and other heat transmission pipelines

Model-Specific Specifications

Model	Single-channel Sensing Distance	Spatial Resolution	Temperature Measurement Range	Single-channel Temperature Sampling Time
FT-27-TSM054UL	5 km	4 m	-200 °C ~ 10 °C	5 s
FT-27-TSM054UH	5 km	4 m	10 °C ~ 300 °C	5 s
FT-27-TSM102	10 km	2 m	-10 °C ~ 120 °C	20 s
FT-27-TSM104	10 km	4 m	-10 °C ~ 120 °C	10 s
FT-27-TSM204	20 km	4 m	-10 °C ~ 120 °C	20 s
FT-27-TSM304	30 km	4 m	-10 °C ~ 120 °C	30 s
FT-27-TMM201	20 km	1 m	-10 ℃ ~ 120 ℃	30 s

 General Specifications Across All Models

Parameter	Specification for FT-27-TSM Single-mode Fiber Series
Channel Quantity	1 channel
Temperature Resolution	0.1 °C
Temperature Measurement Accuracy	±1 °C
Positioning Accuracy	2 m
Operating Ambient Temperature	-25 °C ~ 60 °C
Storage Temperature	-60 °C ~ 70 °C
Power Supply	AC 180 V – 240 V, 50 Hz ± 5 Hz
Optical Connector	FC/APC
Communication Interface	10/100/1000 M adaptive Ethernet, RJ45 port
Secondary Development Interface	Dynamic link library provided for secondary development and system integration
Compatible OS	Windows 2000 and later editions
Alarm Zones	Configured via software
Dimensions	Standard 19-inch 2U rackmount chassis
Weight	5.8 kg
Product Compliance	Passed EMC, environmental reliability, functional and performance verification tests

Important Notice

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.

The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.