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Advantages
l Customizable measurement range
l Rugged package protection with corrosion resistance
l Stable and accurate detection signal
l Fast, simple installation
l Ideal remote and long-term sensing ability
l Double ended design support sensor array
l Combinable with other WASAN-series sensors
l Supportable for both positive and negative displacement measurements
Applications
l Suited for long-term monitoring of crack evolution and unilateral structural displacement of rocks, concrete, etc.
l Applicable for long-term monitoring of gaps and displacements at key joints of bridges, buildings, tunnels, etc.
Description
The WASAN-OFS-D02 is a displacement sensor based on optical Fiber Bragg Grating (FBG) sensing technology. The WASAN-OFS-D02 employs sliding mandrel conversion mechanism and a second temperature compensation FBG to ensure absolute and accurate displacement measurement in civil engineering.
With high-strength steel package this sensor possesses excellent mechanical properties to ensure enhanced fatigue resistance. The WASAN-OFS-D02 includes a second FBG which provides active temperature compensation, which enables absolute and accurate displacement measurement.
The WASAN-OFS-D02 employs the optical device packaging method specific to WASAN-series sensors to ensure the long-term sensing stability and the ability to measure both positive and negative displacements. The sensor possesses wide applications due to the customizable measurement range. Double ended design and low bending loss support remote measurement even if kilometers apart.
The installation of WASAN-OFS-D02 is fast and simple. The main part of the sensor is fixed on one side of the crack or fissure, the top of the slider should be in vertical contact with the other side. Armored cable makes fiber protection fast and easy during measurement.
Displacement Sensor (WASAN-OFS-D02)
Specifications | OFS-D02 |
Performance Properties | |
Measurement range | -25 ~ 25 mm |
Sensitivity | ≈50 pm/mm |
Resolution | 0.02 mm (Related to demodulator resolution) |
Accuracy | Generally ±0.1mm (Related to demodulator accuracy) |
Physical Properties | |
Dimensions | The main body is 113*40*28 mm |
Shell Material | Alloy, alloy steels |
Fiber Type | Single mode fiber |
Cable Type | Φ4 mm armored optical cable |
Connectorization | FC/APC or fusing |
Cable Bend Radius | 5 cm |
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 1605.00nm.
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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