ODiSI 6108 8-Channel Optical Distributed Sensor Interrogator
Eight-channel ODiSI 6000 Series HD-FOS interrogator for distributed strain and temperature sensing with gage pitch down to 0.65 mm.
- Number of channels
- 8
- Gage pitches
- 0.65 mm, 1.3 mm, 2.6 mm, 5.2 mm
- Max measurement rate
- 250 Hz
- Maximum sensor length per channel, standard mode
- 20 m
Overview
The ODiSI 6108 is the eight-channel configuration of the ODiSI 610x models in the Luna ODiSI 6000 Series of high-definition fiber optic sensing (HD-FOS) interrogators. Working with sensors based on unaltered optical fiber and measuring Rayleigh backscatter, the system acquires strain and temperature with a gage pitch as fine as 0.65 mm, providing detailed mapping of strain and temperature profiles. The manufacturer lists the ODiSI 6000 Series as discontinued; the replacement product is the ODiSI 7100 Series.
The ODiSI 610x models can be configured to measure strain or temperature with a gage pitch of 0.65 mm, 1.3 mm, 2.6 mm or 5.2 mm. In standard mode, with Standard Remote Modules, each channel supports an HD-FOS sensor up to 20 m in length or a continuous fiber grating (CFG) sensor up to 15 m. With the optional Extended Range Remote Modules, each channel supports sensors up to 100 m in length as well as HD-SC strain-compensated temperature sensors.
Sensors
HD strain sensors use polyimide-coated fiber with a diameter of 155 µm, are NIST-traceable calibrated and are supplied with calibrated scaling coefficients and a reference key for plug-and-play operation. HD-SC temperature sensors use an advanced interrogation mode to improve accuracy when the sensors are subjected to strain, as in embedded and surface-mount installations. CFG sensors, with fiber Bragg gratings continuously inscribed along the fiber, offer increased tolerance to vibration and improved dynamic performance.
Software and integration
The system includes ODiSI application software for sensor identification and configuration, real-time plotting versus length or time, data logging, replay and export. ODiSI Remote software for Windows and Linux allows control and live viewing from a networked computer. Integration features include IEEE 1588 PTP time synchronization, a JSON-based streaming data format, a TTL sync output and start/stop triggering. Optional 3DViz software maps real-time or saved data onto 3D CAD models or 2D images.
Key Features
- High-definition fiber optic sensing (HD-FOS) with sub-millimeter gage pitch
- 8 measurement channels
- Configurable gage pitch of 0.65 mm, 1.3 mm, 2.6 mm or 5.2 mm
- Up to 100 m of high-definition sensing per channel with Extended Range Remote Modules
- Maximum measurement rate of 250 Hz
- Compatible with HD strain and temperature, HD-SC strain-compensated temperature and CFG sensors
- Passive, corrosion resistant, dielectric sensors for bends, corners and embedded installations
- Long sensor life with no drift or recalibration, cycle counts >10^7
- Continuous optical alignment and calibration with every scan
- Strain sensors calibrated with NIST-traceable fixtures
- Real-time streaming of data over Ethernet via TCP-IP
- IEEE 1588 PTP network time synchronization
- JSON-based digital streaming data format
- Sync output TTL pulse and start/stop triggering
- Remote control and viewing with ODiSI Remote software for Windows and Linux
Specifications
| Number of channels |
8
ODiSI 610x models are available with 1, 2, 4 or 8 channels; ODiSI 6108 is the 8-channel configuration
|
|---|---|
| Gage pitches |
0.65 mm, 1.3 mm, 2.6 mm, 5.2 mm
Gage pitch is the distance between centerpoints of consecutive gages
|
| Max measurement rate | 250 Hz |
| Maximum sensor length per channel, standard mode | 20 m |
| Maximum sensor length per channel, extended range |
100 m
Sensor lengths longer than 20 m, as well as HD-SC strain-compensated sensors, require optional Extended Range Remote Modules
|
| Standoff cable length |
10, 50, 100, 150 or 200 m
Standard lengths of 10, 50 and 100 m; two cables can be combined to form 150 and 200 m
|
| Maximum patch cord length |
Up to 19 m (depending on sensor length)
Patch cord plus active sensor fiber must not exceed 20 m (Standard) or 100 m (Extended Range) per channel
|
| Data interface | Ethernet |
| Gages per meter, 0.65 mm gage pitch | 1,538 |
|---|---|
| Gages per meter, 1.3 mm gage pitch | 768 |
| Gages per meter, 2.6 mm gage pitch | 384 |
| Gages per meter, 5.2 mm gage pitch | 192 |
| Gages per meter, CFG sensors (6 mm gage pitch) |
166
CFG mode requires Luna CFG sensors
|
| 2.5 m mode |
62.5 Hz (0.65 mm), 125 Hz (1.3 mm), 250 Hz (2.6 mm), 250 Hz (5.2 mm), 62.5 Hz (CFG)
Rates are aggregate; divide by number of active channels to determine the per-channel rate
|
|---|---|
| 5 m mode |
40 Hz (0.65 mm), 80 Hz (1.3 mm), 160 Hz (2.6 mm), 160 Hz (5.2 mm), 40 Hz (CFG)
Aggregate rate
|
| 10 m mode |
25 Hz (0.65 mm), 50 Hz (1.3 mm), 100 Hz (2.6 mm), 100 Hz (5.2 mm), 25 Hz (CFG)
Aggregate rate
|
| 20 m mode |
12.5 Hz (0.65 mm), 25 Hz (1.3 mm), 50 Hz (2.6 mm), 50 Hz (5.2 mm), 12.5 Hz (CFG)
Aggregate rate
|
| 50 m mode |
10 Hz (1.3 mm), 20 Hz (2.6 mm), 20 Hz (5.2 mm)
Aggregate rate; not available at 0.65 mm or with CFG sensors
|
| 100 m mode |
10 Hz (2.6 mm), 10 Hz (5.2 mm)
Aggregate rate; not available at 0.65 mm, 1.3 mm or with CFG sensors
|
| Strain measurement range | ±15,000 µϵ |
|---|---|
| Resolution | 0.1 µϵ |
| Instrument accuracy | ±1 µϵ |
| System (instrument and sensor) accuracy |
±25 µϵ (0.65 mm), ±30 µϵ (1.3 mm), ±30 µϵ (2.6 mm), ±30 µϵ (5.2 mm), ±30 µϵ (CFG)
Compared to NIST-traceable extensometer measurements; includes errors from instrument and Luna strain sensors. CFG figures are preliminary
|
| Measurement uncertainty |
±5 µϵ (0.65 mm), ±4 µϵ (1.3 mm), ±2 µϵ (2.6 mm), ±2 µϵ (5.2 mm), ±5 µϵ (CFG)
Twice the standard deviation of 1000 measurements, at zero and across the full strain range
|
| Dynamic loading rate | 1 Hz (0.65 mm), 2.5 Hz (1.3 mm), 5 Hz (2.6 mm), 5 Hz (5.2 mm), tbd (CFG) |
| Temperature measurement range |
-40 to 200 °C (with standard Luna sensors)
With standard temperature sensors (HD6T and HD6SCT); wider range available with other sensor fiber
|
|---|---|
| Temperature measurement resolution | 0.1 °C |
| Temperature measurement uncertainty |
±2.2 °C (0.65 mm), ±1.6 °C (1.3 mm), ±0.6 °C (2.6 mm), ±0.6 °C (5.2 mm), ±1.0 °C (CFG)
Twice the standard deviation of 1000 measurements
|
| Gage pitch |
1.04 cm
Requires Luna HD-SC temperature sensors and Extended Range Remote Modules
|
|---|---|
| Measurement rate (all lengths) | 2.5 Hz |
| Resolution | 0.1 °C |
| Measurement uncertainty | ±0.9 °C |
| Strain compensation |
Over an applied strain range of 0 to 1800 µϵ, measurement accuracy is ± 2.8 °C
RMS error with HD-SC sensor under axial strain; includes effects of the interrogator
|
| Class 1 laser | <10 mW |
|---|---|
| Operating temperature range — mainframe and controller | 5 to 40 °C |
| Operating temperature range — standoff cable and remote module | 5 to 60 °C |
| Storage temperature range | 0 to 40 °C |
| Operating and storage relative humidity (non-condensing) | 10 to 90 % RH |
| Operating altitude | -15 to 3,000 m |
| Dimensions — mainframe (W x D x H) | 34 x 35 x 11 cm |
| Dimensions — laptop controller (W x D x H) | 36 x 24 x 1.7 cm |
| Weight (mainframe and controller) | 17 lb (7.8 kg) |
| Power (mainframe and controller) | 160 W |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- High fidelity model verification
- Temperature mapping for batteries
- Improving bonding and welding quality
- Embedded sensors for smart parts
- Strain characterization of new materials and complex structures
- In-situ temperature profiling of critical processes
- Two- and three-dimensional strain field measurement for FE model validation
- Evaluation of multi-material joining
- Detection of small cracks and defects in critical structures
- Strain measurement on and in composite materials
Included
- ODiSI mainframe with 8 channels
- Instrument controller laptop
- ODiSI application software
- One standoff cable per channel
- One standard length remote module per channel
Options & Accessories
| Option | Description |
|---|---|
| OP06150 | Extended Range Remote Module — Remote module supporting extended sensor lengths of 50 m and 100 m, in addition to standard sensor lengths and strain-compensated temperature (HD-SC) sensors. |
| OPT06100-R | Rack Mount Controller Option — Rack mount (1U) instrument controller (substituted for laptop). |
| OPT06020 | USB-3106 Analog Output — 16-channel analog output module for ODISI (voltage or current outputs). |
| OPT06125 | 3Dviz - 3D/2D Visualization Software — Visualization software for mapping real-time or saved ODiSI data onto 3D models and 2D images. Compatible with Windows OS. |
| OPT06123 | 3Dviz - 2D Visualization Software — Visualization software for mapping real-time or saved ODiSI data onto 2D images. Compatible with Windows OS. |
| HD6SXXLC300P | HD strain sensor — HD strain sensor, LC2+ connector, polyimide coating, 300 °C, length = XX m (1 to 100 m) |
| HD6TXXLC220P | HD temperature sensor — HD temperature sensors with PTFE sleeving, length = XX m (1 to 5 m) |
| HD6SCTXXLC220P | HD strain-compensated temperature sensor — HD strain-compensated temperature sensors with PTFE sleeving, 200 °C, length = XX m (1 to 5 m) |
| HDCFGXXXLCP | HD continuous fiber grating (CFG) sensor — HD continuous fiber grating (CFG) sensors, length = XXX m (1 to 15 m) |
| FOSAPPKIT | Fiber Optic Sensor Application Kit — Materials (epoxy, tools, etc.) required to install 10 m of sensing fiber |
Documents & Resources
Related Products
Windows software that maps ODiSI strain and temperature data onto 3D CAD models or 2D images, live or from recorded files.
High-definition fiber optic strain sensor that measures strain continuously along its length at sub-millimetre resolution when used with an ODiSI system.
Low-profile, flexible strain-compensated fiber optic temperature sensor with 1 cm gage pitch for use with the ODiSI system.
High-definition fiber optic temperature sensor that gives continuous sub-millimeter temperature measurements along the fiber when used with an ODiSI system.