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Advantages
l Customizable measurement range
l Strong anti-side pressure capability
l Wide dynamic measurement range with high inherent frequency
l Rugged package protection with corrosion resistance
l Stable and accurate detection signal
l Fast, simple, permanent installation
l Ideal remote and long-term sensing ability
l Combinable with other WASAN-series sensors
l Supportable for both static and dynamic pressure measurements
Applications
l Suited for static and dynamic pressure monitoring for soft foundations in civil engineering construction sites, such as fills and dams
l Applicable for contact pressure monitoring of concrete, steel structure surface, retaining wall, etc.
Description
The WASAN-OFS-EP01 is an earth pressure sensor based on optical Fiber Bragg Grating (FBG) sensing technology. The WASAN-OFS-EP01 employs pressure sensitive conversion film and a second temperature compensation FBG to ensure absolute and accurate pressure measurement in civil engineering.
With a corrosion-resistant and high-strength steel package this sensor possesses excellent resistances to soil acid and alkali corrosion and side pressure. The WASAN-OFS-EP01 includes a second FBG which provides active temperature compensation, which enables absolute and accurate strain measurement.
The WASAN-OFS-EP01 employs the optical device packaging method specific to WASAN-series sensors to ensure the long-term sensing stability and the ability to measure both static and dynamic pressures. The sensor possesses wide applications due to the customizable measurement range. Single ended design and low bending loss support remote measurement even if kilometers apart.
The typical installation of WASAN-OFS-EP01 is embedded installation, the bearing surface should be perpendicular to the direction of the measured pressure. Armored cable makes fiber protection fast and easy during measurement.
Earth Pressure Sensor (WASAN-OFS-EP01)
Specifications | OFS-EP01 |
Performance Properties | |
Measurement range | 2 Mpa (Customizable 1/3/5 Mpa) |
Resolution | 0.1% F.S. |
Accuracy | 3% F.S. |
Physical Properties | |
Dimensions | Φ120*30 mm |
Shell Material | Alloy steel |
Fiber Type | Single mode fiber |
Cable Type | Φ5 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 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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