The document describes a Distributed Temperature Monitoring System (DTS) that uses optical fibers to monitor temperature along channels. The DTS can monitor up to 20 optical fiber channels with 1 meter sampling and ±1°C temperature precision from -190°C to 700°C. It has functions like flexible partitioning, multi-level alarms, and self-monitoring for fault tolerance. The DTS has applications in cable tunnels, coal belts, transformers, highways and more.

1. DTS- Distributed Temperature
Monitoring System
august, 2011
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2. dimensions
19” 4U standard cabinet:
w*d*h
483*320*178 mm
Made in China Made in UK
cabinet model Cabinet style
wall mount model wall mount style
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3. system architecture
Optical
Fiber temperature（Channel1）
Fibre
Ethernet
Cable
DTS1 Fiber temperature（ChannelN）
Terminal
Case
Ethernet
Optical Fiber temperature（Channel1）
Central Fibre
Monitoring DTS2 Cable
Fiber temperature（ChannelN）
System Terminal
Case
Optical
Fiber temperature（Channel1）
Fibre
Ethernet
Cable
DTSN Fiber temperature（ChannelN）
Terminal
Case
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4. system architecture
Fiber temperature（Channel1）
Ethernet Optical Fibre
DTS 1 Cable
Fiber temperature（ChannelN）
Terminal Case
Ethernet
Fiber temperature（Channel1）
Optical Fibre
Central DTS 2 Cable
Monitoring Terminal Case Fiber temperature（ChannelN）
System
Fiber temperature（Channel1）
Ethernet Optical Fibre
DTS 3 Cable
Fiber temperature（ChannelN）
Terminal Case
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5. specifications
measurement distance : 1/2/4/6/8/12/15/30 km
sampling interval: 1m
# of optical fiber channels 1/2/4/6/8, can be expanded to 20
measurement: single-ended or double-ended
positioning precision : 1m
temperature precision : ±1℃
temperature resolution : ±0.1℃
switch: The MEMS optical switch
OS Microsoft Windows XP or above
communication interfaces: Ethernet, RS232, RS485
working temperature -190 ℃ to 700 ℃
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6. functions
flexible partition length
partitioning
multi-level alarm for
each partition
fixed temperature
alarm differential temperature
temperature growth rate
fault tolerance to
self-monitoring
system failures and
fiber fracture
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7. application
•Cable tunnels, shafts
•Cable sandwich
•Coal belt
•Transformer
•Highway tunnels
•Subway tunnels
•Petroleum and petrochemical
•Hydropower station
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8. reference
• Japan National
Route 19
• Japan National
Route 220
• Hạ Long Bay
bridges, Vietnam
• Chile Copper Mine
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9. Contact
• Long Zhang
• +86-10-6515 1437
• zlong@iotportal.net
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