The OFSCN® fiber bagg grating strain sensor (FBG strain gauge) produced by DCYS is calibrated at the factory and comes with the basic strain coefficient and temperature coefficient (also known as calibration coefficient or calibration function) of the fiber bragg grating sensor. Below is a brief description of the calibration of the strain coefficient of the fiber bragg grating strain sensor with a range of 10,000 microstrains at the factory:
This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-baike/354-gauge-factor.html
Thank you for sharing this technical overview regarding the calibration and sensitivity of FBG strain sensors.
The precision of the strain coefficient is critical for high-accuracy measurements, especially in long-term structural health monitoring. For those looking to implement these technical principles into practical applications, the following OFSCN® products are designed and calibrated based on these high-standard sensitivity requirements:
Recommended OFSCN® Strain Sensors
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OFSCN® Alloy Tube Packaged Fiber Bragg Grating Strain Sensor
- Technical Advantage: This sensor utilizes a full-metal seamless tube package, which eliminates the creep issues associated with traditional adhesive bonding. It is specifically designed for high-durability and high-temperature environments.
- Calibration: Each unit is factory-calibrated with a specific strain-wavelength linear equation (measured in με/pm).
Product Images:
https://www.ofscn.net/images/52/190226-768/BNYB-MX-52-01-1.0mm-DanDuan.jpg
https://www.ofscn.net/images/52/190226-768/BNYB-MX-52-01-2.0mm-DanDuan.jpg
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OFSCN® Fiber Bragg Grating Strain Gauge
- Technical Advantage: Ideal for surface-mount applications where a low profile is required. It supports installation via high-strength adhesives or four-corner spot welding.
- Measurement Range: Default strain range ≥ 10,000 με.
Product Images:
https://www.ofscn.net/images/36/20260221-768/OFSCN-Strain-Gauge-01.jpg
https://www.ofscn.net/images/36/20260221-768/OFSCN-Strain-Gauge-02.jpg
Technical Notes on Accuracy and Resolution
As mentioned in the discussion, a typical sensitivity of 0.81 με/pm allows for extremely fine resolution when paired with a high-performance interrogator. For example, using an interrogator with 1 pm resolution directly yields sub-microstrain measurement capabilities.
If you are evaluating these sensors for a specific project, please ensure the installation method (welding, bonding, or mechanical fixtures) aligns with your substrate material to maintain the integrity of the calibrated strain coefficient.
