Decagon Devices ECH2O EA-10 Integrator Manual - Page 7

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EA-10 Soil Moisture Sensor Integrator's Guide
2. Installing the EA-10
between the probe and the soil. For deeper instal-
lation, excavate down to the level you wish to mea-
sure, then install the probe as described.
When selecting a site for installation, it is important to
remember that the soil adjacent to the probe surface
has the strongest influence on the probe reading and
that the probe measures the volumetric water content.
Therefore any air gaps or excessive soil compaction
around the probe can profoundly influence the read-
ings. Also, do not install the probes adjacent to large
metal objects such as metal poles or stakes. This can
attenuate the probe's electromagnetic field and
adversely affect output readings.

Turf Installation

When installing the EA-10, the installation procedure
is almost the same, except that the probe must be
placed at a 45° angle to the ground, instead of straight
down.
Orientation
The probe can be oriented in any direction. However,
orienting the flat side perpendicular to the surface of
the soil will minimize effects on downward water
movement.
Removing the Probe
When removing the probe from the soil, do not
pull it out of the soil by the cable! Doing so may
break internal connections and make the probe unu-
able.
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