General Function
|
Separation of strain and temperature measured in single fiber,
PPP-BOTDA / BOTDR / TW-COTDR / COTDR |
Function
|
PPP-BOTDA |
TW-COTDR |
Laser Wavelength
|
1550±2 nm |
1530 nm~ 1560 nm |
Distance Range
|
50m, 100m, 250m, 500m, 1km, 2.5km, 5km,
10km, 25 km |
Measurement Frequency Range
|
9~13 GHz |
192300~196000 GHz |
| Range of Strain Measurements |
-30,000 ~ +40,000με (-3% ~ 4%) |
-15,000 ~ +20,000με
(-1.5% ~ 2%) |
| Measurement Frequency Scan Step |
1, 2, 5, 10, 20, 50MHz |
100, 200, 250, 500 MHz |
| Readout Resolution |
5 cm (default), 1 cm (minimum) |
| Sampling Points |
600,000 (default), 3,000,000 (maximum) |
Average Count Settings
|
2^5～2^23 times (including hardware count 2^16 time) |
Pulse width
|
0.5 ns |
1 ns |
2 ns |
5 ns |
10 ns |
0.5 ns |
1 ns |
2 ns |
Spatial Resolution
|
5 cm |
10 cm |
20 cm |
50 cm |
100 cm |
5 cm |
10 cm |
20 cm |
| Dynamic Range*1 |
1 dB |
1.5 dB |
3 dB |
3 dB |
6 dB |
1 dB |
3 dB |
6 dB |
| Max. Measurement Distance*2 |
1 km |
2 km |
5 km |
10 km |
20 km |
1 km |
10 km |
20 km |
| Optical Budget*1*8 |
2 dB |
5 dB |
7 dB |
8 dB |
10 dB |
2 dB |
5 dB |
7 dB |
| Measurement Accuracy(σ)*3*4 |
15με / 0.75℃ |
7.5με / 0.35 ℃ |
0.5με / 0.05 ℃ |
| Repeatability(σ)*3*4*5 |
10με / 0.5℃ |
5με / 0.25 ℃ |
0.2με / 0.01 ℃ |
| Measurement Accuracy for Hybrid mode*9 |
10με / 0.5 ℃ |
| Measurement Repeatability for Hybrid mode*9 |
5με / 0.25 ℃ |
| Measurement Time*6 |
5 seconds (minimum)
|
60 seconds (minimum) |
| Input-Output Connector |
Single mode optical fiber |
Fiber Connector
|
FC-APC / SC-APC (factory option) |
Suitable Fiber
|
Single mode optical fiber |
Power Supply
|
AC100~240V
50/60Hz 250VA |
Laser Class
|
Class 1 (IEC60825-1: 2001) |
Dimensions / Weight
|
456(W)×485(D)×286(H) mm / 30 kg |
Operating Temperature
|
10~35℃, Humidity below 85% (no dew condensation) |
Storage Temperature
|
0~50℃ |
Place of Production
|
Japan |
| *1 |
Based on 2^15 average cycles (TW-COTDR) / Based on 2^15 average cycles in progressive measurement mode (PPP-BOTDA). |
| *2 |
Based on average fiber loss of 0.3 dB/km using single mode fiber. |
| *3 |
Based on the measurement of strain-free, UV-coated fiber. |
| *4 |
Based on the measurement with strain-free, UV-coated fiber and in constant temperature environment. |
| *5 |
The maximum standard deviation of measurement value in 5 consecutive measurements for 100 consecutive points. |
| *6 |
The settings of 50 m distance range, 2^14 count settings, 41 scanning steps excluding the time for Pulse Adjustment. |
| *7 |
The settings of 50 m distance range, 2^14 count settings, 401 scanning steps excluding the time for Pulse Adjustment. |
| *8 |
Within the allowable range adjusted by the optical power excluding the case of nonlinear phenomina. |
| *9 |
The measurement mode of PPP-BOTDA and TW-BOTDR used with conditions of (1)-(8) applied.
|
| *1-*5 are all based on a frequency scan step of 5 MHz for PPP-BOTDA and with Pulse Adjustment and Auto Frequency Adjustment on. |
| *1-*5 are all based on a frequency scan step of 250 MHz for TW-COTDR and with Pulse Adjustment and Auto Frequency Adjustment on. |
Neubrex Co., Ltd. Sakaemachidori 1-1-24, Chuo-ku, Kobe, Hyogo, 650-0023 JAPAN [map]
Copyright © 2007 Neubrex Co., Ltd. Tel:+81-78-335-3510/Fax:+81-78-335-3515 E-Mail: info@neubrex.jp |
