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TThe Brillouin optical time domain analyzer BOTDA, also known as the distributed fiber optic temperature strain sensor or Brillouin optical time domain analyzer, adopts the fiber optic Brillouin backscattering effect and the optical time domain reflection OTDR principle. It is the latest generation of distributed fiber optic sensors in the world, which can achieve temperature, strain, and spectrum measurement at various points along the fiber optic line over ultra long distances, with a measurement distance of up to 20-100km and a measurement accuracy of 1 ºC/20 με, The measurement time is less than 60 seconds. The host uses standard communication single-mode optical fibers (ITU-T G.652, G.655, G.657, etc.) as sensors. The optical fiber is both a transmission medium and a sensing element, integrating transmission and sensing. By laying the optical fiber on the test object, real-time temperature and strain distribution information at each point on the optical fiber can be obtained, achieving continuous online monitoring and precise positioning over ultra long distances. BOTDA integrates advanced technologies such as optoelectronics, hardware, computer, and information processing, with advanced measurement principles and excellent technical performance. It has important applications in high-voltage cables, overhead lines, bridges, tunnels, dams, oil and gas pipelines, and other fields.
Basic parameters:
| Sensing Fiber |
Standard single mode fibers |
| Sensor Configuration |
Two fibers(loop) |
| Distance Range |
100km |
| Measurement Channels |
1/2/4 |
| Measurement Time |
60s(as low as 60s) |
| Temperature Range |
-40ºC~125ºC(According to the fiber optic material, it can reach 700 ºC) |
| Temperature Accuracy |
±1ºC(whole sensing range) |
| Temperature Resolution |
0.1ºC |
| Strain Range |
-10000με~+10000με |
| Strain Accuracy |
±20με(whole sensing range) |
| Strain Resolution |
2με |
| Sampling Space |
0.1m(as low as 0.1m) |
| Spatial Resolution |
0.5m~3m |
| Fiber Connector |
FC/APC |
| Power Supply |
220VAC 50Hz,60W |
| Operating Temperature |
-10ºC~50ºC |
| Storage Temperature |
-20ºC~60ºC |
| Communication Connectors |
Ethernet,USB,RS232/RS485 |
| Data storage |
500GB or more |
| Dimensions(W×D×H) |
483×447×133mm(19"rack) |
| Weight |
15kg |
Product features:
1. Continuous distributed measurement of temperature and strain without measurement blind spots
2. Using communication single-mode optical fibers and fully utilizing redundant optical fibers
3. Over a hundred kilometers of ultra long measurement distance, rich measurement information
4. Fiber optic is a sensor that combines transmission and sensing
5. Can accurately locate the location of events
6. Optical signal transmission, completely electrically insulated, resistant to electromagnetic interference
7. Frequency domain absolute encoding, high measurement accuracy, no need for calibration
8. Intrinsic safety, suitable for long-term operation in flammable and explosive environments
9. Stable and reliable measurement with low false alarm rate
10. Long service life of optical fibers, maintenance free for decades
Application scenarios
Customized OEM solutions for your industry,
We offer original equipment manufacturer (OEM) solutions in multiple vertical markets,
These markets rely on high-quality, stable, and carefully designed technologies tailored to their industries.
Application plan
Product composition
Measurement host:
The measurement host is the core of the BOTDA product system, which includes functional modules such as ultra narrow linewidth semiconductor laser light source, microwave frequency detection, narrow pulse drive circuit, polarization control, optical amplification, weak signal detection, and ultra high speed data acquisition. Pump light and probe light are injected from both ends of the optical fiber. When the frequency difference between pump light and probe light is equal to the Brillouin frequency shift in a certain range of the fiber, stimulated Brillouin amplification effect occurs in that area, and energy transfer occurs between the two beams of light. By scanning and detecting the frequency of light, the Brillouin spectrum of any point in the fiber can be obtained, thereby obtaining distributed strain and temperature measurements.
LCD display (optional):
According to application requirements, it can be equipped with either a regular desktop or rack mounted LCD display. If BOTDA products need to be installed on standard cabinets, it is recommended to use rack mounted industrial grade LCD displays. Industrial grade components are preferred for this display, which have a long lifespan and good reliability; The panel is sprayed with aluminum magnesium alloy, which is aesthetically pleasing and sturdy; The galvanized sheet of the box body has strong oxidation and corrosion resistance characteristics, achieving IP65 protection level.
User Software:
The user software of this product includes:
The server-side software (fiber optic Brillouin analysis software) is mainly used for device hardware parameter settings and alarm settings,
The client software (fiber optic sensing online monitoring software) is mainly used for measuring curve display, data query, statistical analysis, and visual display.
Sensing fiber optic:
1. The optical fiber of the accessory is ordinary single-mode communication optical fiber, and specifications such as ITU-T G.652/653/655/657 can be selected. To form a measurement loop, the BOTDA measurement host needs to be connected to a 2-core single-mode optical fiber.
2. When applying, it is necessary to select sensing optical fibers/cables according to the application scenario:
For the application of leak monitoring in long oil and gas pipelines, special designed sensing optical cables can be considered, such as adding a sheath that is resistant to pressure, tensile, and easy to conduct heat, to facilitate timely response to external temperature changes;
For online monitoring applications of optoelectronic composite cables, the built-in communication optical fiber can be directly used as a sensor;
For the application of health monitoring of large civil engineering structures, it is necessary to choose sensing optical cables with smaller excess length. Please consult the manufacturer for specific fiber optic specifications.
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- The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
- The delivery time: Usually it will take about 15-20 days.
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- Warranty: in 12 month since BL date.
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- Reliable quality solve you after sale headache.
- Long period quality warranty ensure you can buy without hesitate.
1. One-stop supplier globally.
2. More than 13 years professional experiences in electrical appliance industry.
3. We offer professional online technology support for perfecting your electrical solution free
4. Experienced sales service and suggestion.
5. All the products with accessories under strict quality control and final inspection before shipping.
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7. Most competitive shipping rate from our own shipping forwarder.
8. Warranty assurance: 12 month
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