FBG Strain Gauges (Surface Type)
Type FBG-SG-SM surface fiber grating strain gauge can meet the needs of surface strain measurement in various occasions. It can be installed on the surface of concrete or steel structure, mainly used to measure the surface strain of concrete and steel structure. The external strain transmits the strain to the internal fiber grating through the sensor mount, and the reflection center wavelength of the grating will change, and then the fiber grating demodulator performs demodulation analysis and calculates the strain value.
Overview
The sensor can be used for short-term or long-term monitoring of structural stress changes, state analysis, and realization of structural health status diagnosis and early warning purposes. The sensor is small and easy to install. Strain gauges are connected in series or in parallel, which is easy to form a quasi-distributed sensor network. It can be widely used in stress-strain testing and long-term monitoring of structures such as bridges, buildings, hydraulic engineering, and steel structures.
Characteristic:
- High Accuracy,resolution and stability;
- Anti-electromagnetic interference, electrical insulation;
- Built-in temperature compensation grating;
- Can be mixed with other types of fiber grating sensors to easily build a distributed monitoring network;
Application scenarios:
- Suitable for strain monitoring of bridges, gas pipelines, etc;
- Strain monitoring of large steel structures, such as transmission line tower;
- Rail surface strain monitoring;
- Surface strain measurement of steel structures and concrete;
- Strain static and dynamic testing or monitoring;
- Structural fatigue monitoring;
Specifications
|
Central wavelength |
1510~ 1590nm |
|
Measuring range |
±1500με |
|
Resolution |
0.05% FS |
|
Accuracy |
0.5% FS |
|
Temperature compensation |
FBG-SG-SM15 (none), FBG-SG-SM15T (built-in) |
|
Packaging materials |
Stainless steel |
|
Dimensions |
Φ12 x 130mm |
|
Installation method |
bolts, welding |
|
Fiber optic cable type |
Φ 3mm armored, 1 meter fiber outlet at both ends or customized |
|
Connector |
FC/APC, or customized |
|
Operating temperature |
-20 ~ +80°C |
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