Top 10 manufacturers of distributed fiber optic sensing temperature monitoring systems

Optički senzor temperature, Inteligentni sistem nadzora, Distribuirani proizvođač optičkih vlakana u Kini

What is a distributed fiber optic temperature sensing system

It is an instrument that uses one (or more) ordinary optical fibers and a terminal device to measure temperatures at up to several thousand points within a range of several kilometers.

Principle of Distributed Fiber Optic Temperature Sensing System

It is based on the Raman scattering phenomenon of optical fibers. The light pulses emitted by the laser light source interact with fiber molecules, causing scattering. There are various types of scattered light, such as Rayleigh scattering, Brillouin scattering, and Raman scattering. Raman scattering is associated with the thermal vibrations of fiber molecules, making it sensitive to temperature and suitable for temperature measurement.

In optical fibers, the scattered signal is continuous. By using high-speed signal acquisition technology to measure the time interval between incident light and Raman scattering light, the location where Raman scattering light occurs can be obtained. Due to the sensitivity of Raman scattering light to temperature, the corresponding temperature distribution can be measured along the optical fiber.

Characteristics of distributed fiber optic temperature measurement technology:
Design and manufacture according to national standards;
Military grade laser devices with high system reliability;
Embedded intelligent system, low power consumption;
Realize measurement distances of over 10km;
The system adopts closed-loop control internally to ensure accuracy stability;
Modular structure, easy to maintain and upgrade the system;
High stability in harsh environments and capable of long-term operation.

Application of distributed fiber optic temperature measurement system:

Temperature uniformity testing of power plant boilers and blast furnace walls in steel plants;
Detection of overheating faults in cables and cable heads;
Multi point temperature detection of power distribution facilities;
Uniformity testing of solidification temperature for large concrete components;
Detection of tunnel ventilation and fire status;
Detection of road icing status;
Petroleum and chemical industry: monitoring of oil and gas pipeline leaks;
Temperature measurement of oil wells;
Fire monitoring in computer rooms/buildings;

The following is a reference for distributed fiber optic temperature measurement types. Please contact us for a quotation and information.

(1) Measurement distance: 4 kilometers
(2) Temperature sensing accuracy: 1 °C
(3) Measurement time: 15 seconds
(4) Shortest temperature sensing length: 3 meters
(5) Distance resolution: 1 meter
1. Specification of temperature sensing fiber optic interface:
(1) Number of temperature sensing fiber paths: 1-8, with fiber cores of 62.5/125 or 50/125.
(2) Temperature sensing fiber port specifications: FC/APC or E2000/APC.
2. Communication interface:
1×USB2.0； 8 x relay;
RJ45 (optional); RS485 (optional)
3. Alarm output:
(1) Temperature alarm.
(2) Fiber optic fault alarm.
(3) Equipment malfunction alarm.
4. Data display method:
(1) Run software to display graphical interfaces, set parameters, and achieve data storage and output; Fire and system failure alarms have sound/light and graphic interface alarm functions.
(2) The front panel LED displays power on/off, system faults, fiber optic faults, and temperature alarms.
(3) The front half LCD displays text information about alarms and faults.
(4) The front panel buttons provide self check, mute, and LCD display information lookup functions.
5. Other:
(1) Working temperature range: 0 ℃~40 ℃.
(2) Power supply mode: 220VAC/0.5A/50Hz or 24VDC/2A.
(3) Software. Operating platform: Windows 2000/XP/Windows 7/Windows 8.1.
(4) Appearance structure: Aluminum alloy chassis, surface brushed oxidation treatment, width 19 ‘, height 4U or 2U, depth 350mm.
(5) Weight: Approximately 10kg/5kg