RSTAR Affinity

Critical asset data at your fingertips

RSTAR Affinity

Built by RST Instruments’ team of seasoned instrumentation experts specifically for geotechnical monitoring projects, the RSTAR Affinity system comprises loggers, gateways, secure communications for data telemetry, and mobile and desktop applications. Forget the headaches of improvised monitoring solutions cobbled together from different third-party vendors. RSTAR Affinity represents your complete industrial internet of things (IIoT) solution for reliable, real-time data flow from your work site to your desktop—all from a single source.

RSTAR Affinity gateway

The RSTAR Affinity gateway is easy to set up and connects seamlessly to RSTAR Affinity data loggers for real-time data delivery and communication suitable for a wide range of wireless monitoring applications and sensor types.

The RSTAR Affinity gateway receives telemetry from RSTAR Affinity data loggers through LoRa radio. The data is forwarded to the RSTAR Affinity cloud server through wired internet, Wi-Fi, LTE, or to an on-premise server through local ISM radio.

The RSTAR Affinity gateway enables secure wireless communication between data loggers and the RSTAR Affinity browser-based dashboard and mobile application so sensor data can be transmitted and analyzed.

The RSTAR Affinity gateway provides bi-directional connectivity between field devices and the RSTAR Affinity browser-based UI dashboard and mobile application.

Flexible connectivity including Ethernet, cellular, Wi-Fi, local radio LAN.

A pole mount is included with the gateway enclosure. An optional wall mount is also available. RSTAR Affinity is OpenAPI 3.0 compliant

RSTAR Affinity data logger

The RSTAR Affinity data logger is designed to connect a variety of field sensors to the RSTAR Affinity web-based dashboard. Each data logger can be configured to support up to five instruments of varying types.

Instrument and data logger configuration is mediated through secure and authenticated Bluetooth (BLE).

Instrument readings are communicated in real-time by low-power wide area network (LPWAN) through an RSTAR Affinity gateway. LPWAN protocols supported include LoRaWAN for long-range outdoor applications (up to 15 km).

Standalone data logging is supported by the synching of instrument data by local authenticated download in the RSTAR Affinity Field app.

Instrument Interface Modules (IIM) allow RSTAR Affinity data loggers to accommodate up to five different sensor types in a single node. Each of the logger’s five ports can be fitted with the appropriate module for the sensor type of your choice.

Each connected instrument has its own logging schedule. Data sample and port sample, and/or event alert threshold intervals can be globally or independently configured (between one minute and seven days) for most sensor types.

The RSTAR Affinity data logger is powered by three 13 Ah primary lithium-thionyl chloride (Li-SOCl2) cells, each with its own fuel gauge.

Built to the customer’s specifications and configured within RSTAR Affinity’s software platform and companion mobile application (RSTAR Affinity Field app) to report logging intervals and/or alert thresholds reached based on the IIM, each data logger communicates with the closest RSTAR Affinity gateway within its range.

The set of instruments that each data logger supports is custom-configured, calibrated, and tested at our factory according to your order specifications and stores data locally to an onboard flash memory.

RSTAR Affinity is OpenAPI 3.0 compliant.


  • 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