Displacement Gage

Displacement Gage

The os5000 is an fiber-Bragg grating (FBG) based displacement gage designed for measuring small changes of less than 12 mm in civil and geotechnical structures.

Product Description

The os5000 is specifically designed to measure the displacement between two gage points on a specimen surface. The gage design is flexible enough to allow for easy attachment to various substrates, making measurements on metal, concrete and other surfaces straightforward. The two FBG sensors that comprise the os5000 gage are located within the rugged hard-coat anodized aluminum enclosure which shields them from the elements and allows for installations in harsh environments.

This gage can be used alone or in series as a part of an FBG sensor array (which may include strain and temperature gages, accelerometers and other displacement gages). Cabling for such arrays is much less expensive and cumbersome than comparable electronic gage networks. Cables can be joined directly inside the enclosure, eliminating the need for separate junction boxes. The os5000 delivers the many advantages inherent to all FBG based sensors, including EMI immunity – something vibrating wire gages cannot offer.

With each gage, Luna provides a Sensor Information Sheet listing the gage factor and calibration coefficients needed to convert wavelength information into engineering units. The ENLIGHT Sensing Software provides a utility to calculate and then record, display and transmit data for large networks of sensors.  

  • Key Features
    • Up to 12 mm measurement range using a 1 mm stainless steel cable
    • Rugged aluminum enclosure with IP67 rating; suitable for outdoor installations
    • Internal protection of connectors/splices
    • Double-ended design supports multiplexing of many sensors on one fiber
    • Fully temperature compensated over the entire operating range
    • Fast response time, stable measurements, high resolution
  • Specifications
    Measurment range 0 - 12 mm
    Resolution 0.02%
    Linearity 0.026 mm (0.22% FS)
    Operating Temperature Range -40 to 80 °C
    Environmental ingress IP67
    Construction Anodized aluminum

    For full specifications, please download the data sheet.

  • Documentation

Solutions and Applications

Bridge construction

The os5000 Displacement Gage, combined with the HYPERION interrogator, works with a wide range of rugged sensor options to provide provides proven and reliable solutions for challenging monitoring applications.  

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