Luna os3320 Temperature Compensated Optical Strain Rosette (FBG)
Temperature-compensated FBG strain rosette with three strain elements at 0°/45°/90° and one temperature compensation element.
- Measurement Type
- Strain rosette, temperature compensated
- FBG Elements
- 3 - Strain, 1 temperature compensation
- Measurement Range
- ±1,800με
- Strain Sensitivity
- ~ 1.2 pm/με
Overview
The Luna os3320 is the temperature-compensated member of the os3300 series of fiber Bragg grating (FBG) based optical strain rosettes by CMIWS. It carries three active strain elements oriented at 0°, 45° and 90°, plus one FBG element for temperature compensation.
The sensor is a compact, low-profile, spot-weldable design on a 304 stainless steel carrier. A mounting plate affixed to the sensor guides the installer, making installation simple and repeatable. Sensors can be dispersed over distances of up to 10 km and paired on the same instrumentation platform with sensors for other physical parameters such as temperature, displacement, acceleration, tilt and pressure.
The os3300 series is compatible with Luna's HYPERION interrogator platform and with ENLIGHT Sensing Analysis Software, which provides tools for data acquisition, computation and analysis of optical sensor networks. The HYPERION platform also offers an Application Programming Interface (API) with examples in LabVIEW, Python, Matlab, C++ and C#.
Key Features
- Simple and repeatable installation guided by an affixed mounting plate
- Three strain elements at 0°/45°/90° plus one temperature compensation element
- Discrete, low-profile multipoint sensing on a single HYPERION instrument
- Multiparameter measurements coupled onto the same instrumentation platform
- Long-distance coverage of over 10km
- Compatible with ENLIGHT Sensing Analysis Software and the HYPERION API
Specifications
| Measurement Type | Strain rosette, temperature compensated |
|---|---|
| FBG Elements | 3 - Strain, 1 temperature compensation |
| Measurement Range | ±1,800με |
| Strain Sensitivity | ~ 1.2 pm/με |
| Measurement Angles | 0, 45, 90° |
| Operating Temperature | -40 to 120 °C |
| Measurement Distance | Up to 10km |
| Measurement Points Per Interrogator | Up to 80, 5 sensors per channel |
| Scan Frequency |
1kHz and 5kHz instrument options available
Depends on interrogator instrument
|
| Wavelength Options | 1460 to 1620 nm options available |
| Dimensions | ø 34 mm Diameter, 1.5 mm Thickness |
|---|---|
| Carrier Material | 304 Stainless Steel |
| Cable Type / Length | 1 mm Fiberglass Braid / 1 m (± 10 cm), each end |
| Fastening Method | Spot Weld |
| Part Number Format |
os3320-ssss-ssss-ssss-tttt-1xx-1yy
ssss = strain FBG wavelengths, tttt = temperature FBG wavelength, 1xx / 1yy = cable length and connector for each end
|
|---|---|
| Strain/Temp FBG Wavelengths (set 1) | 1466 - 1474 - 1482 - 1488 |
| Strain/Temp FBG Wavelengths (set 2) | 1498 - 1506 - 1514 - 1520 |
| Strain/Temp FBG Wavelengths (set 3) | 1530 - 1538 - 1546 - 1552 |
| Strain/Temp FBG Wavelengths (set 4) | 1562 - 1570 - 1578 - 1584 |
| Strain/Temp FBG Wavelengths (set 5) | 1594 - 1602 - 1610 - 1616 |
| Cable Length |
1 m Standard
Codes 1xx / 1yy, each end
|
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Structures
- Energy
- Transportation
- Marine vessels
Options & Accessories
| Option | Description |
|---|---|
| UT | Unterminated — Cable end termination option (xx / yy position in part number) |
| FC | FC/APC Connector — Cable end connector option (xx / yy position in part number) |
Documents & Resources
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