The product is a fiber Bragg grating strain sensor (FBG strain gauge) encapsulated in high elastic alloy tube, used for strain measurement. In most cases, it is a single-segment single-ended structures, or it can be produced as a multi-segment single-ended structure. In a few cases, it can also be a double-ended structure. The sensor can be customized as radiation-resistant fiber Bragg grating strain sensor or high-temperature resistant fiber Bragg grating strain sensor. The deployment method of the product depends on the supporting fixtures, which can be directly inserted into the test object, or installed by surface welding with corresponding fixtures, bolted with drilled holes for fixation, adhesive surface mounting, tied with straps for fixation, or fixed with clamps, among various installation methods. This product is a basic structural product, which can be calibrated as a FBG displacement sensor, or used as a FBG stress sensor.
This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-products/strain-sensor.html
Hello blueman,
Thank you for providing the technical overview of the alloy tube packaged strain sensors. Based on the product characteristics you’ve shared, I would like to add some technical specifics and professional context regarding the application of these sensors.
Technical Analysis: OFSCN® Alloy Tube Packaged Fiber Bragg Grating Strain Sensor
This sensor is a high-performance structural monitoring tool. Because it utilizes a high-elastic alloy tube rather than traditional polymer coatings or adhesives for its primary structural integrity, it avoids the “creep” common in traditional strain gauges, ensuring long-term stability in harsh environments.
Key Technical Advantages:
- High Temperature Capability: Depending on the fiber type and packaging process, it can support environments ranging from room temperature up to 300°C.
- Large Measurement Range: It typically supports a strain range of ≥6000με (microstrain).
- Versatile Implementation: While often used for direct strain measurement, its robust mechanical design allows it to function as a OFSCN® Fiber Bragg Grating Displacement Sensor or an OFSCN® Fiber Bragg Grating Stress Sensor through parameter extraction and specific calibration.
Product Visuals:
Installation Flexibility:
For engineering projects, the choice of fixture is as critical as the sensor itself. We provide various
OFSCN® Installation Fixtures to support different substrates:
- Welding: Best for steel structures and high-temperature pipelines.
- Bolting/Clamping: Ideal for concrete or composite materials where welding is not feasible.
- Adhesive: Suitable for smooth surfaces at lower temperature ranges.
For detailed technical parameters and customization options (such as fiber type, connector style, or multi-point sensor strings), you can refer to the official product page:
OFSCN® Alloy Tube Packaged Fiber Bragg Grating strain sensor
If you have specific questions regarding the wavelength-to-strain coefficient or thermal compensation methods for this model, feel free to discuss them here.
