AgTech Directory

Geonics EM38 MkII Non-contacting Ground Conductivity Meter

The EM38-MkII Ground Conductivity Meter provides measurement of both the quad-phase (conductivity) and in-phase (susceptibility) components, within two distinct depth ranges, to a maximum effective depth of 1.5 metres, all simultaneously. In addition, standard features and options each provide additional benefits: integrated Bluetooth functionality provides the option of wireless data transmission; a power input connector allows for the use of external power sources; a rechargeable external battery pack extends the duration of instrument operation; and a portable calibration stand can provide the convenience of an automated calibration. With all that the EM38 MkII provides, more information is now available in less time with less associated cost.


  • Focus areas
  • Pricing model

    Hardware is purchased outright. Customer / consultant owns data outright. Processing is simple and comprehensive with off-the-shelf software packages. Data presentation can be customised to optimise the customers applications and targets.

  • Installation process

    The solution is installed by the farmer / producer. Equipment can be used in a man-portable operation or mounted behind a tractor or ag-bike.

  • Ongoing maintenance required and support provided in Australia

    The Geonics EM38 MkII requires minimal maintenance but when repair or re-calibration is needed, CoRMaGeo Instruments provides local support.

  • Units deployed commercially
    Approximately 100 units have been sold within Australia.
  • Energy source

    Battery powered.

  • Communications compatibility

    The Geonics EM38 MkII connects to its data-logger or computer by BlueTooth. Data can then be merged with GPS positional data.

  • Data ownership policy

    Customer owns all data and has complete autonomy to choose if/when/how to provide access to data to third parties.

  • Data privacy and security policy

    We maintain a secure cloud environment for our data.

Case Study

The Use of EM38 and Precision Viticulture Techniques to Improve Water Use Efficiency (Coonawarra SA) The South East (SE) of South Australia is fortunate in having a large, low salinity, ground water resource. With an increasing demand on this resource and an upcoming conversion to a volumetric licensing system, there is a community expectation that irrigators use this resource in an efficient manner. Efficient irrigation requires an understanding of the interrelationship of the factors: soil, climate and crop, along with the accurate assessment\measurement of variables such as soil moisture. This project targets water use efficiency by analysis of Readily Available Water (RAW) and plant water use, in the form of a comprehensive review of irrigation practices in a Wingara Wine Group Pty. Ltd. vineyard.

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