Luna ODiSI 6001 Optical Distributed Sensor Interrogator (ODiSI 6000 Series)

ODiSI 600x-class distributed fiber optic strain and temperature interrogator from the ODiSI 6000 Series, using a standard 5.2 mm gage pitch.

Number of channels: 1, 2, 4 or 8
Gage pitch (HD sensors): 5.2 mm
Max measurement rate: 30 Hz
Strain-compensated temperature sensors: Supported

Datasheet

Overview

The ODiSI 6001 is a model in the ODiSI 600x line of the Luna ODiSI 6000 Series of high-definition fiber optic sensing (HD-FOS) interrogators. Luna has discontinued the ODiSI 6000 Series and lists the ODiSI 7100 Series as its replacement.

The interrogator measures Rayleigh backscatter in low-cost, unaltered optical fiber, which lets it record many strain or temperature measurements along each meter of a single fiber sensor. The ODiSI 600x models support a gage pitch of 5.2 mm. ODiSI 600x systems also work with continuous fiber grating (CFG) sensors, which tolerate vibration better and give improved dynamic performance. With the optional Extended Range Remote Modules, they also support strain-compensated (HD-SC) temperature sensors.

System and software

The system includes the mainframe, an instrument controller laptop running the ODiSI application software (Linux OS), and one standoff cable and standard-length remote module per channel. The software identifies sensors automatically and sets up measurement modes, timing, triggering and data logging. It can save, replay and export data and stream it in real time over Ethernet. ODiSI Remote software for Windows and Linux allows remote control and viewing. The optional 3DViz software maps data onto 3D CAD models or 2D images.

Integration

For integration with other systems, the ODiSI system provides IEEE 1588 PTP network time synchronization, a JSON-based streaming data format, a TTL sync output pulse, and start and stop triggering.

Key Features

High-definition distributed sensing based on Rayleigh backscatter in unaltered optical fiber
ODiSI 600x models support a gage pitch of 5.2 mm
Up to 100 m of sensing fiber per channel with Extended Range Remote Modules
Compatible with HD strain and temperature sensors, HD-SC strain-compensated temperature sensors and CFG sensors
Complete system measures, acquires, logs and communicates real-time data
Passive, corrosion resistant, dielectric sensors
Long sensor life with no drift or recalibration, cycle counts >10^7
Continuous optical alignment and calibration with every scan, requiring no user intervention
Strain sensors calibrated with NIST-traceable fixtures
IEEE 1588 PTP network time synchronization
JSON-based digital streaming data format
Sync output TTL pulse
Start and stop triggering functions
Real-time remote access via ODiSI Remote software for Windows and Linux

Specifications

System Configuration

Number of channels ODiSI 600x	1, 2, 4 or 8 ODiSI 600x configurations
Gage pitch (HD sensors) ODiSI 600x	5.2 mm ODiSI 600x models
Max measurement rate ODiSI 600x	30 Hz
Strain-compensated temperature sensors	Supported Requires Extended Range Remote Modules
Continuous Fiber Grating (CFG) sensors	Supported
Data interface	Ethernet

Sensor Length and Cabling

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 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

HD Mode — 5.2 mm Gage Pitch (ODiSI 600x)

Gage pitch ODiSI 600x	5.2 mm Gage pitch is the distance between centerpoints of consecutive gages
Gages per meter of sensor ODiSI 600x	192
Measurement rate — 2.5 m mode ODiSI 600x	30 Hz Rates are aggregate; divide by number of active channels
Measurement rate — 5 m mode ODiSI 600x	20 Hz Aggregate rate
Measurement rate — 10 m mode ODiSI 600x	12.5 Hz Aggregate rate
Measurement rate — 20 m mode ODiSI 600x	6.3 Hz Aggregate rate
Measurement rate — 50 m mode ODiSI 600x	2.5 Hz Aggregate rate
Measurement rate — 100 m mode ODiSI 600x	1 Hz Aggregate rate
System (instrument and sensor) accuracy ODiSI 600x	±30 µϵ Compared to NIST-traceable extensometer measurements; includes errors from instrument and Luna strain sensors
Measurement uncertainty ODiSI 600x	±2 µϵ At zero and across the full strain range; twice the standard deviation of 1000 measurements
Dynamic loading rate ODiSI 600x	5 Hz
Temperature measurement uncertainty ODiSI 600x	±0.6 °C Twice the standard deviation of 1000 measurements

CFG Mode — 6 mm Gage Pitch

Gage pitch	6 mm Requires Luna CFG sensors; accuracy and uncertainty specifications are preliminary
Gages per meter of sensor	166
Measurement rate — 2.5 m mode	62.5 Hz Aggregate rate
Measurement rate — 5 m mode	40 Hz Aggregate rate
Measurement rate — 10 m mode	25 Hz Aggregate rate
Measurement rate — 20 m mode	12.5 Hz Aggregate rate
System (instrument and sensor) accuracy	±30 µϵ Preliminary
Measurement uncertainty	±5 µϵ Preliminary
Temperature measurement uncertainty	±1.0 °C Preliminary

Strain and Temperature Performance

Strain measurement range	±15,000 µϵ
Resolution	0.1 µϵ
Instrument accuracy	±1 µϵ
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

Strain-Compensated Temperature Mode

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 the HD-SC sensor subjected to axial strain; includes effects of the ODiSI interrogator

Environmental and Physical

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	10 to 90 % RH Non-condensing
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 to validate FE models
Evaluation of multi-material joining
Detection of small cracks and defects in critical structures

Included

ODiSI mainframe
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.