Brillouin optical time domain analyzer DSTS Distributed fiber optic temperature strain sensor BOTDA1000
Measuring Principle
Based on the stimulated Brillouin scattering effect, the Brillouin optical time domain analyzer BOTDA uses two ultra-narrow linewidth laser light sources, namely pump (pulsed optical signal) and probe (continuous optical signal), to inject the optical signals at both ends of the sensing fiber, measure and detect the optical signals at the pulsed optical end of the sensing fiber, and perform high-speed data acquisition and processing.
Technological advantage
· Ultra-long distance continuous distributed measurement, with a maximum measuring distance of 60km
· Temperature, strain and spectrum measurement
· High measurement accuracy, stable and reliable measurement
· Absolute frequency coding, not affected by light source intensity fluctuations, fiber microbending, fiber drogen loss, etc
· Single-mode communication fiber can be directly used in the sensor, and the “transmission” and “sense” are integrated
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BOTDA 1000 |
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Fiber type |
Ordinary single-mode optical fiber G.652/ G.655/G.657 |
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Measuring distance |
60 km ((loop 120km) |
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Measuring time |
60s |
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Measurement accuracy |
± 1 ℃ / ± 20 µ ε |
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Measurement distinction |
0.1 ℃ / 2 µ ε |
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Sampling interval |
0.1-2m (Can be set) |
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Spatial separation rate |
0.5-5m (Can be set) |
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Measurement range |
- 200 ℃ + 400 ℃/10 000 µε← + 10000 µε(depends on the optical fiber ) |
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Optical fiber connector |
FC/APC |
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Communication interface |
Ethernet, RS232/ RS485/USB |
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Working condition |
(-10 +50)℃，0-95% R.H.(No condensation) |
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Working power supply |
DC 24V/AC220V |
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Size |
483mm(W) x 447mm(D) x 133mm(H), 19 – дюймовый штатив |
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