General Information
The FBG-Scan 90X is a dynamic, precise measurement devices for Fiber Bragg Grating (FBG) sensors based on spectrometer technology. The system offers a cost effective solution and is offered as a 4 or 8 channel system. All sensors can be monitored with a sampling rate of 400Hz or 222 Hz respectively. The system has a high wavelength stability of 0,3pm at full measurement speed and has an absolute wavelength accuracy of 10pm. This is guaranteed using the built-in wavelength reference which makes a periodic recalibration of the system obsolete. The sampling is done using the internal clock or can be controlled by an external trigger signal to synchronize the measurements with other devices. The system is supplied with the “ILLumiSense” software, which is used to visualize and process the FBG wavelengths on a PC and convert these data into engineered data such as temperature and strain data.
Features
- 4 or 8 individual optical channels
- Up to 40 sensors per optical channel
- High wavelength stability of 0,3pm (1s) @ full sampling rate
- Internal wavelength reference for high absolute wavelength accuracy
- No need for time of flight corrections to maintain wavelength accuracy
- Depolarized light source to reduce birefringence induced noise effects
- High dynamic range > 30dB
- External triggering possible
- Simultaneously detection of sensors belonging to the same optical channel
| Parameter | FBG-Scan | |
| 904 | 908 | |
| Optical | ||
| wavelength range | 1510–1590 nm | |
| minimum wavelength spacing | 0.8 nm | |
| number of channels | 4 | 8 |
| wavelength precision (1σ)1 | 0.3 pm @ full measurement speed | |
| absolute wavelength accuracy | 10 pm | |
| wavelength linearity | 3 pm | |
| minimum wavelength spacing | 0.8 nm | |
| dynamic range | > 30 dB with user selectable control | |
| sampling rate – all channels selected | 400 Hz | 222 Hz |
| sampling rate – one channel active | 1 KHz | |
| degree of polarisation light source | ≤ 5 % | |
| optical connector | LC / APC | |
| laser class (IEC 60825-1) | 1 | |
| Electrical | ||
| communication | USB | |
| trigger signal | TTL signal (3.3 V), SMA connector | |
| power supply | 9–15 V DC | |
| Environmental | ||
| operating temperature | 0–45° C | |
| operating humidity | 0–80% RH, non-condensing | |
| Mechanical | ||
| weight | 2.4 kg | |
| dimensions (w x d x h) | 250 mm x 180 mm x 60 mm | |
1 measured on a 200 GHz etalon with bandwidth 120 pm FWHM
