T8 Manual - UMS

Installation
• Rule, spirit level, angle gauge, marker pen.
• Minute book, camera for documentation of site and soil profile.
• Perhaps PE-plastic bags for taking soil samples from the site.
• Thermal insulation tubes for installations from soil surface.
• Cable protection tubes.
• Jacket tubes if required (inner diameter > 35 mm).
Please observe the following notes:
Do not touch the cup with your fingers. The ceramic should not
have contact with grease or soap as this will influence the
hydrophilic performance.
Do not leave the cup in air for more than 5 minutes as
Tensiometer water will evaporate and the Tensiometer will need to
be refilled.
Procedure:
1. Mark the required drilling depth on auger and Tensiometer shaft.
The reference point is the center of the cup. Drill a hole with the
desired depth on the chosen measuring spot. Auger stepwise
and take care when drilling the last 20 cm, remove and save this
soil. Water will not run along the shaft if the Tensiometer is
installed in an angle because the water will drain into the soil
before it reaches the cup.
Read the chapter "Selecting the installation position" for the best
installation angle.
2. When using augers with a diameter of over 25 mm, mix a paste
of water and crumbled soil material taken out of the borehole. Fill
the paste into the bottom area of the borehole by using a simple
pipe with outer diameter 2 cm.
3. Now take off the protective plastic cap from the Tensiometer cup.
Important: Do not turn, but pull when taking the bottle off - and
also when putting it back on again!
Save the plastic bottles: Do not store the Tensiometer without the
protective plastic bottle since the cup drains fast! The bottle must
be filled with some water for storage!
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