Digital fiber optic sensors can be installed on smooth metallic or composite surfaces, embedded in concrete, or mounted on DIN rails, depending on the application and sensor type.

Surface Installation

For high-resolution strain measurements, fiber optic sensors are typically bonded to smooth metallic or composite surfaces using adhesives such as M-Bond 200 or AE-10 . The surface should be cleaned, abraded, and conditioned to ensure strong adhesion. After curing, a protective layer, such as RTV silicone, is recommended to shield the fiber and adhesive from environmental effects like temperature, humidity, or mechanical abrasion . This method is common in aerospace, automotive, and structural health monitoring applications.

Embedment in Materials

In civil engineering or structural applications, fiber optic sensors can be embedded in concrete by placing the fiber in a groove or casting it directly into the material . This allows the sensor to measure distributed strain throughout the structure and provides long-term durability in harsh environments.

Temporary or Non-Critical Installations

For short-term or non-critical applications, double-sided tape can be used to attach the fiber to a surface. While easier to install, tape is less reliable than adhesive and may be affected by environmental conditions .

DIN Rail Mounting for Digital Sensors

Digital fiber optic sensor modules, such as intelligent amplifiers, are often mounted on DIN rails in control panels or instrumentation racks . The device is aligned with the DIN track and pressed into place according to the manufacturer's instructions. This method is suitable for indoor installations where the sensor module requires stable mechanical support and easy access for calibration and wiring.

Protective Measures and Calibration

After installation, it is important to calibrate the sensor according to the manufacturer's instructions, often using a one-point or multi-point calibration procedure . Protective coatings or enclosures may be applied to prevent damage from environmental exposure, especially for outdoor or industrial applications.

Summary

• Smooth metallic/composite surfaces: adhesive bonding with surface preparation and protective coating.
• Concrete or structural embedment: fiber placed in grooves or cast into material.
• Temporary installations: tape attachment for short-term use.
• Digital sensor modules: DIN rail mounting in control panels.
• Calibration and protection: essential for accurate measurements and long-term reliability . Proper selection of installation location and method ensures accurate strain measurement, sensor longevity, and reliable operation in the intended application.