METER GROUP 10HS User manual

10HS

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TABLE OF CONTENTS
1. Introduction..............................................................................................1
2. Operation ...................................................................................................2
2.1 Installation ................................................................................................2
2.2 Removing the Sensor .................................................................................3
2.3 Connecting................................................................................................. 3
2.3.1 Connect to METER Data Logger........................................................ 4
2.3.2 Connect to a Non-METER Data Logger ............................................. 4
2.4 Interfacing with Data Loggers....................................................................6
2.4.1 Data Logger Requirements...............................................................6
2.4.2 METER Data Loggers........................................................................6
2.4.3 Non-METER Data Loggers................................................................ 6
3. System.........................................................................................................7
3.1 Specifications............................................................................................7
3.2 About 10HS................................................................................................ 9
4. Service....................................................................................................... 10
4.1 Calibration ............................................................................................... 10
4.1.1 Dielectric Calibration..................................................................... 10
4.1.2 Mineral Soil Calibration ................................................................. 10
4.1.3 Potting Soil .................................................................................... 11
4.2 Troubleshooting....................................................................................... 12
4.3 Customer Support.................................................................................... 13
4.4 Terms and Conditions .............................................................................. 13
References .................................................................................................... 14
Index ................................................................................................................. 15
13508-05
5.9.2018

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1. INTRODUCTION
Thank you for choosing the ECH2O 10HS Soil Water Content sensor from METER Group.
This innovative sensor enables volumetric water content monitoring of soil accurately and
affordably.
This manual guides the customer through the sensor features and describes how to use the
sensor successfully. METER hopes the contents of this manual are useful in understanding
the instrument and maximizing its benefit.
Prior to use, verify the 10HS arrived in good condition.

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OPERATION
2. OPERATION
Please read all instructions before operating the 10HS to ensure it performs to its full
potential.
PRECAUTIONS
METER sensors are built to the highest standards, but misuse, improper protection, or
improper installation may damage the sensor and possibly void the manufacturer’s warranty.
Before integrating 10HS into a system, follow the recommended installation instructions and
have the proper protections in place to safeguard sensors from damage.
2.1 INSTALLATION
When selecting a site for installation, remember that the soil adjacent to the sensor surface
has the strongest influence on the sensor reading and that the sensor measures the
volumetric water content of the soil. Therefore any air gaps or excessive soil compaction
around the sensor and in between the sensor prongs can profoundly influence the readings.
• If installing sensors in a lightning-prone area with a grounded data logger, please read
Lightning surge and grounding practices.
• Test the sensors with the data logging device and software before going to the field.
Do not install the sensor adjacent to large metal objects such as metal poles or stakes. This
can attenuate the sensor's electromagnetic field and adversely affect readings. In addition,
the 10HS sensor should not be installed within 5 cm of the soil surface, or the sensing
volume of the electromagnetic field can extend out of the soil and reduce accuracy.
Because the 10HS has gaps between its prongs, it is also important to consider the particle
size of the medium. It is possible to get sticks, bark, roots or other material stuck between
the sensor prongs, which will adversely affect readings. Finally, be careful when inserting the
sensors into dense soil, as the prongs can break if excessive sideways force is used when
pushing them in.
When installing the 10HS, it is imperative to maximize contact between the sensor and soil.
For most accurate results, the sensor should be inserted into undisturbed soil. There are two
basic methods to accomplish a high-quality installation.
With either of these methods, the sensor may still be difficult to insert into extremely
compact or dry soil.
NOTE: Never pound the sensor into the soil! If there is difficulty inserting the sensor, loosen or wet the soil.This will
result in inaccurate VWC measurements until the water added during installing redistributes into the surrounding soil.