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Advantages
l Rugged package protection
l Stable and accurate detection signal
l Fast, simple, permanent installation
l Multiplexing and multiaccess capabilities reducing cabling configuration
l Ideal remote and long-term sensing ability
l Combinable with other WASAN-series sensors
l Double ended design support sensor array
l Supportable for both positive and negative strain measurements
Applications
l Suited for structural health monitoring in large civil engineering, such as axial force measurements for cables of the suspension bridges and support structures of the foundation pit tunnels.
l Applicable for structural health monitoring in heavy loading machinery, such as axial force measurements for port cranes, floating cranes.
Description
The WASAN-OFS-A01 is an anchor force sensor based on optical Fiber Bragg Grating (FBG) sensing technology. The design of WASAN-OFS-A01 is suitable for reliable and accurate strain measurement with full consideration of mechanical and installation characteristics.
With a high-strength steel package this sensor possesses excellent mechanical properties to ensure enhanced fatigue resistance. The WASAN-OFS-A01 includes a second FBG which provides active temperature compensation, which enables absolute and accurate strain measurement. WASAN-series sensors employ the unique optical device packaging method to ensure the long-term sensing stability and the ability to measure both positive and negative strains.
The typical installation of WASAN-OFS-A01 is shown in the following diagram. Armored cables make both installation and fiber protection fast and easy during measurement.
The WASAN-OFS-A01 can be used alone or in series as a part of an FBG array. Double ended design and low bending loss support multiplexing of many sensors on one single fiber even if kilometers apart. Installation of such arrays will be more economical and maintainable for large measurement networks.
Anchor Force Sensor (WASAN-OFS-A01)
Specifications | OFS-A01 |
Performance Properties | |
Measurement range | 800 kN |
Resolution | 0.5%F.S. |
Accuracy | 1%F.S. |
Physical Properties | |
Dimensions | Largest part of the main body is 125 x Φ160 mm |
Shell Material | Stainless steel alloy |
Fiber Type | Single mode fiber |
Cable Type | Φ8 mm armoured optical cable |
Connectorization | FC/APC or fusing |
Cable Bend Radius | 5 cm |
Installation method | Connected in series or clamped to the object under test |
Optical Properties | |
Peak Reflectivity (Rmax) | > 90 % |
FWHM (-3 dB point) | 0.25 nm |
Notes:
1. The typical initial wavelength of the FBG sensor is from 1525.00nm to 1580.00nm.
2. To achieve measurement accuracy as presented in this datasheet, the sensor should be used with the high-speed interrogator WASAN-OSI-16.
3. For special coating FBG please contact wasan@wasan.mo
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