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Installation
3.2.1 "Vertical" with downwards angle
When installed from the surface, an angle of 25° to 65° from the
vertical is optimal for refilling. In an absolutely vertical position air
bubbles might 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
yellow sticker. Into this tube, water is injected for refilling.
Before inserting the Tensiometer, turn the shaft so the yellow
sticker near the shaft end points upwards.
Do not turn the shaft after it is inserted into the ground as this
might loosen the cup.
3.2.2 "Horizontal" or upwards installation angle
When installed horizontally or upwards from inside a well or pit hole,
the shaftmark must look downwards! An upward angle of approx. 5°
is ideal for refilling. Note that now de-airing and refilling tube are
switched: the refilling tube is the longer
stainless steel tube without the black
mark. Into this tube, water is injected for
refilling.
Before inserting the Tensiometer, turn
the shaft so the yellow sticker near the shaft end points
downwards.
Do not turn the shaft after it is inserted into the ground as this
might loosen the cup.
Note that with a horizontal installation the filling indicator will not
react much later, - if installed upwards not before until the cup is
almost empty.
3.3 Installation procedure
For the installation of the T8 in the field the following tools are
required:
Tensiometer auger with diameter 25 mm, ideally the UMS gouge
auger with shaped blade tip.
Rule, spirit level, angle gauge, marker pen.
19/58
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