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Automated & Manual  Wire-line Extensometers

Pangea Geosystems is proud to be the licensed supplier and service provider for SlideMinder wire-line extensometers. The SlideMinder Slope Monitoring & Warning System was developed in 2003 by engineers and geologists at the consulting firm Call & Nicholas Inc. to provide clients with a reliable, affordable, and easy-to-use slope monitoring alternative. 

Today, the second generation SlideMinder represents the industry standard in wire-line extensometers. There are currently hundreds of units deployed all over the world monitoring and reporting on safety critical situations.

  • SLOPE MOVEMENT ANALYSIS: Software displays measurements and graphs displacement, velocity and system data.

  • ACCURATE REAL-TIME MEASUREMENTS: Measures movement to 0.01cm and monitors throughout slope failure without damage to the extensometer.

  • AUTOMATED WARNINGS & ALARMS: On-site warning beacons, automated text and email alerts.

  • PRECIPITATION MEASUREMENT: Mounted rain gauge records precipitation at the monitoring location.

  • MINIMAL SITE PREP: Small tripod footprint with no required line power.

  • SCALABLE: Start with as little as one extensometer and add more as needed. Additional units are easily added after initial server setup.

The Second Generation SlideMinder (SMII)

  • Field proven to withstand rugged conditions and extreme temperatures

  • Wi-Fi and FHSS radio technologies do not interfere with existing communications. Internationally complient 

  • Complete customization of alarms allows geotechnical personnel to set user-defined warnings for multiple velocities and displacements for each machine

  • Warnings and alarms can activate strobes and be sent via cell phones, web browsers, and e-mail

  • Stand-alone system operates remotely and requires very little maintenance

  • Software utilizes web-based graphing engine that can be viewed and controlled on any computer on the network

  • Allows monitoring throughout a slope failure without damage to the unit

  • Powder coated NEMA4 enclosure

  • Measurements: 16x12x7 inches


The SlideMinder Slope Monitoring & Warning System works using our proprietary server software, OREAD. Easy to use and reliable, OREAD uses an intuitive graphical user interface. The Web-Based design allows easy access for authorized users from multiple locations. 

Easily graph the following.

  • Displacement

  • Velocity

  • Inverse Velocity

  • Battery Voltage and Recharge

  • Temperature

  • Precipitation



OREAD is also where users set and edit Alarms.  Alarms are designed to activate warning devices, if desired, send out emails or text messages to appropriate personnel when specified slope displacement and/or velocities are exceeded. OREAD is included and installed with the initial SlideMinder installation.


  • Windows 7, 64-bit, 1 GB RAM

  • USB port

  • Video card

Other Software Aspects

  • Data available in SQL or graphic form

  • User-defined alarms and alarm groups

  • User-specified warning notifications

    • Electronic (Browser/Email/SMS)

    • Physical (Strobes)

  • Monitors and reports battery health and temperature

  • GUI interface allows viewing from internet; multi-user availability from any computer on the network

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