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Connect sensorized segments in the field for a continuous deformation profile.

SAAV Extend—our latest innovation addresses the challenges of continual deformation monitoring during the raising of tailings dams. Inspired by direct feedback from clients in the tailings and mine waste sectors, SAAV Extend provides a continual deformation profile throughout multiple dam raises with unparalleled ease of installation and data interpretation.

SAAV Extend is a modular ShapeArray™ system that scales along with your project’s scope. SAAV Extend includes a top assembly that connects to a base assembly that creates a continuous deformation profile of a borehole. When it is time to raise the tailings dam, SAAV Extend Lift Extension segments can be added between the top and base assemblies to increase the total sensorized length. SAAV Extend’s connectors are keyed to ensure azimuth is maintained as Lift Extension segments are added in the field.

SAAV Extend is designed for the field. Our toolless connectors ensure that SAAV Extend produces continuous and reliable, long-term data while submerged in water-logged environments.

SAAV Extend can be installed into existing casings, even those that are too distorted for conventional use, which eliminates the need to drill new boreholes when converting from manual to automated monitoring. SAAV’s patented cyclical installation method means it can be directly inserted into a range of casing sizes and widths, including both standard grooved inclinometer casings and smooth casing types, without assembly in the field. Measurand’s software tracks the medial axis in the centre of the casing in 3D to produce traditional inclinometer plots.

All ShapeArray instruments are manufactured in a high-capacity ISO 9001:2015 certified facility.

ShapeArray that grows with your monitoring strategy

SAAV Extend will always have a sensorized length that is right for your needs. Individual sensor segments can be combined up to a total sensorized length of 200 m.

Simple installation in the field

SAAV Extend’s hand-tight threaded connectors allow clients to easily add sections of lift extension segments without additional tools. Adding new lift extension segments is as simple as twisting, while keyed alignment marks on the connectors maintain the ShapeArray’s azimuth.

A connectable ShapeArray design that is just as durable as SAAV

Designed specifically for the rigours of tailings dam safety monitoring, SAAV Extend is submersible up to a depth of 200 m. SAAV Extend has the same 38-year MTTF as any ShapeArray that Measurand manufactures. It also has the same temperature tolerances and tensile strength, so clients can trust SAAV Extend in as wide a range of environments as existing SAAV models.

Real-time measurements in real-world conditions

You cannot guarantee pristine conditions in the field when you need to perform your ShapeArray installation. That’s why SAAV Extend’s connectors have a 300-psi open-face pressure rating. You can connect segments in the rain without worrying about damaging your instruments.

Total control to monitor the zone of interest

Clients can use silent segments, first introduced with SAAV, to target the total sensorized length towards the geologic zone of interest.


  • 1993

    The Beginning

    Measurand is established in Fredericton, New Brunswick
  • 1994

    Bend sensor development

    Measurand develops and patents fiber optic bend and position sensors for the medical and automotive sectors

    U.S. Patent 5,321,257

  • 1995

    Canadian Space Agency

    Receives funding from the CSA to develop sensor technology that ultimately leads to invention of ShapeTape

    U.S. Patent 5,633,494

  • 1999

    Patent on fiber optic sensor

    Measurand receives patent for "Fiber Optic Bending and Positioning Sensor" issued June 29, 1999

    Canadian Patent 2,073,162

  • 2001

    ShapeTape & ShapeHand debut

    Measurand designs and develops innovative motion capture technology

    U.S. Patent 6,127,672, 6,563,107

  • 2002

    Measurand Attends the ICPMG

    First contact with the geotechnical sector at the International Conference on Physical Modelling in Geotechnics (ICPMG)
  • 2004


    Design patent application sent about a new product designed to meet the specific needs of the geotechnical industry

    U.S. Patent 6,127,672, 6,563,107

  • 2005-08


    Measurand debuts ShapeWrap motion capture technology for the film and animation industry

    U.S. Patent 7,296,363

  • 2006

    Malibu installation

    ShapeAccelArray installed for ground monitoring for the first time​ in Malibu, CA

    Canadian Patent 2,472,421

  • 2007


    Suite of instrumentation developed for motion capture within Magnetic Resonance Imaging (MRI) machines

    U.S. Patent 7,296,363

  • 2011

    SAAScan launched

    Built for rapid deployment and repeated use

    Canadian Patent 2,472,421

  • 2014

    SAAX launched

    Purpose-built for heavy-duty horizontal installation

    Canadian application 2,815,199 & 2,815,195

  • 2017

    SAAV launched

    The only geotechnical instrument with a patented cyclical installation method

    Cyclical Sensor Array, Canadian application 2,815,199 & 2,911,175