Tensior T8 - Eijkelkamp Agrisearch Equipment

7 Concept and installation
7.1 Selecting the measuring site
The installation spot should be representative for the soil horizon! Therefore,
in heterogenic soils, classifying drillings should be made before or during
installation.
On farmed sites with vegetation root spreading and root growth during the
measuring period must be considered. Fine roots will grow around the
Tensiometer cup as this is a poor but still secure source of water. Therefore,
avoid the root zone or move the Tensiometer from time to time depending on
the root growth.
Disturbing effects like waysides, the rim of a field, slopes or dints must be
avoided or considered in the interpretation of the measuring results.
7.2 Selecting the installation angle
An installation position would be ideal if the typical water flow is not disturbed
by the Tensiometer. No preferential water flow along the shaft should be
created. Therefore, Tensiometers are preferably installed at an angle.
7.2.1 "Vertical" with downwardly angle
When installed from the surface, an angle of 25° to 65° from the
vertical line is optimal for refilling. In an absolutely vertical position
air bubbles might hide inside the edges of the cup adapter. Still,
they could be removed completely with the vacuum refilling kit
BKTex. In this position, the refilling tube is the shorter stainless
steel tube with the black mark. Into this tube, water is injected for
refilling.
7.2.2 "Horizontal" with upwardly angle
When installed horizontally from inside a well or pit hole,
the Tensiometer must point upwards! This means the
20