Tubular packaged FBG strain sensor

The tubular-packaged FBG strain sensor uses a fiber Bragg grating as the sensing element, protects the optical fiber through a tubular packaging structure, and is divided into two forms: embedded type and surface-bonded type. The embedded type can be poured along with concrete or installed inside reinforced concrete, while the surface-bonded type is used for surface strain measurement of steel structures and other surfaces, helping users observe structural strain changes over the long term and perform condition analysis. The product resolution is 0.1% F.S., the strain range is -1500με to +1500με, the center wavelength is 1510 to 1590nm, the accuracy is 0.3% F.S., it uses ordinary single-mode optical fiber, the dimensions are 72×28mm at both ends and 8×8.5mm in the middle, and the dimensions can be customized. The optical fiber exits from both ends, making networking and series connection convenient. If you need to confirm the specific model, configuration, or quotation, welcome to contact us, provide the usage scenario, dimensions, and quantity, and we will assist with confirmation.

• Two forms, embedded type and surface-bonded type, respectively corresponding to strain measurement inside concrete and on the surface of steel structures
• Resolution 0.1% F.S., accuracy 0.3% F.S., strain range covering -1500με to +1500με
• Fiber Bragg grating principle, immune to electromagnetic interference, suitable for complex electromagnetic environments such as substations and rail transit
• Temperature resistant, corrosion resistant, aging resistant, long-term zero-point stability, minimal temperature drift, suitable for long-term monitoring
• Optical fiber exits from both ends, convenient for series networking, reducing wiring complexity
• Dimensions can be customized, 72×28mm at both ends and 8×8.5mm in the middle, can be confirmed according to project requirements

Applications

• Long-term strain monitoring inside concrete structures, such as dams, bridge piers, tunnel linings, etc., embedded before pouring
• Strain measurement of reinforced concrete components, embedded according to construction progress and connected to the monitoring system
• Surface strain monitoring of steel structures, such as factory buildings, bridge steel box girders, towers, etc., installed by surface bonding
• Retrofit of existing structural health monitoring projects, requiring strain measurement points that are resistant to electromagnetic interference and corrosion
• Structural strain data acquisition in scientific research and teaching experiments, requiring high-resolution, long-term stable sensors

FAQ

What material strain is the tubular packaged FBG strain sensor suitable for measuring?

It is mainly used for strain measurement of concrete, reinforced concrete, and steel structures. The embedded type is suitable for the interior of concrete or reinforced concrete, while the surface-bonded type is suitable for surfaces such as steel structures. For specific model selection, please contact us for confirmation.

What are the strain range and accuracy of this sensor?

The strain range is -1500με to +1500με, the resolution is 0.1% F.S., the accuracy is 0.3% F.S., the center wavelength is 1510 to 1590nm, and it uses ordinary single-mode optical fiber.

What is the difference between the embedded type and the surface-bonded type?

The embedded type is embedded before concrete pouring or during construction, and is used for internal strain measurement; the surface-bonded type is bonded to surfaces such as steel structures, and is used for surface strain monitoring. The two forms differ in installation method and applicable structures. Please contact us to confirm which one is suitable for your project.

Can the dimensions be customized?

Yes. The standard dimensions are 72×28mm at both ends and 8×8.5mm in the middle, and the dimensions can be customized. Please provide the dimensions and quantity you need, and we will assist with confirmation.

How can I obtain a quotation and delivery time?

Please contact us and provide requirements such as the use case, structural material, dimensions, quantity, and center wavelength, and we will assist in confirming the configuration, quotation, and delivery time.