METER TEROS 12 Advanced Soil Moisture Sensing User Guide

June 6, 2024
METER

METER TEROS 12 Advanced Soil Moisture Sensing

METER TEROS 12 Advanced Soil Moisture Sensing

Preparation

Inspect and verify the sensor components (TEROS 11 Soil Moisture and Temperature or TEROS 12 Soil Moisture, Temperature, and Electrical Conductivity). The TEROS verification clip gives the best assessment of proper sensor function and accuracy. The TEROS 11/12 should read 0.332 to 0.363 m3/m3 on the verification clip. If a verification clip is not available, test basic sensor functionality in air and water. The TEROS 11/12 will read ~0.70 m3/m3 in water and a slightly negative value in air.
NOTE: The sensors are optimized to read in soils, therefore the sensor will not read 100% in pure liquid water. Values above use the mineral soil calibration.

Installation Tool

Proper installation of the sensors is critical for proper operation. Refer to the TEROS 11/12 User Manual for details.
For easy installation, use the borehole installation tool. The installation tool (shown below) is available for rent from METER Group. Contact Customer Support for more information.Installation tools

What is soil moisture?

Soil moisture is a key variable in controlling the exchange of water and heat energy between the land surface and the atmosphere through evaporation and plant transpiration.
Learn more at metergroup.com

ATTENTION : For best results, use the latest versions of METER software and firmware for the computer or mobile device, ZENTRA products, and sensors. Please use the software Help menu to find updates. Consult the sensor user manual for more troubleshooting tips.

Installation

  1. Insert Sensor
    Auger or trench a hole to the desired sensor depth. Insert the sensor into the undisturbed soil.
    When using the borehole installation tool, load the TEROS 11/12 as shown. Lower the tool into the hole or trench with the back of the tool supported by the far wall. Pull on the lever to activate the jack and insert the sensor into hole wall.Installation fig1

  2. Check Sensor Operation
    Plug the sensor into the data logger and use the SCAN function in the software to do a quick check of sensor operation before backfilling.Installation
fig2

  3. Repack Soil and Protect Cables
    Secure and protect cables with PVC casing or flexible conduit and backfill the trench or hole.Installation fig3

  4. Plug Sensor In and Configure Logger
    Plug the sensor into the data logger. Use data logger software to apply appropriate settings to the sensors plugged into each data logger port.Installation fig4

SUPPORT

Have a question or problem? Our support team can help.
We manufacture, test, calibrate, and repair every instrument in house. Our scientists and technicians use the instruments every day in our product testing lab. No matter what your question is, we have someone who can help you answer it.

NORTH AMERICA
Email: support.environment@metergroup.com
Phone: +1.509.332.5600

EUROPE
Email: support.europe@metergroup.com
Phone: +49 89 12 66 52 0

References

Read User Manual Online (PDF format)

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Download This Manual (PDF format)

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