Tensior T8 - Eijkelkamp Agrisearch Equipment
Tensior T8 - Eijkelkamp Agrisearch Equipment
Tensior T8 - Eijkelkamp Agrisearch Equipment
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pebbly grounds a fine grained illuvation paste would even effect a water<br />
reservoir which would slow down the response.<br />
3. Take off the protective plastic bottle from the Tensiometer cup. Pull the<br />
bottle it off carefully or slowly turn it counter-clockwise!<br />
4. Insert the <strong>T8</strong> into the borehole up to the depth mark without using force.<br />
In clayey soils an overpressure might develop: Check the Tensiometer's<br />
pressure reading with an Infield measuring device or a datalogger!<br />
8<br />
Important: Pay attention to the engraved black spot on the<br />
end of the shaft that marks the position of the exit opening of<br />
the external filling inside the cup:<br />
a) Downwards installation: If the position of the cup will be<br />
lower than the end of the shaft, this mark must point<br />
upwards!<br />
b) Upwards installation: If the position of the cup<br />
will be higher than the end of the shaft, this mark<br />
must point downwards!<br />
5. Push down the shaft water retaining disk to a position directly on the soil<br />
surface. Water flowing down the shaft will not disturb measurements.<br />
6. Leave on the protective cap on the plug if the plug is not connected.<br />
7. Connect the Tensiometer signal wires as specified (see chapter 8<br />
Connecting the <strong>T8</strong>). If the measuring station is prepared , attach<br />
the Tensiometer plug to the suitable connecting cable.<br />
Notes:<br />
- The less air is inside the cup and the better the soil's conductivity is, the faster<br />
the Tensiometer will respond.<br />
- If the soil is dryer than 900 hPa, it does not make sense to refill the<br />
Tensiometer. Refill the Tensiometer as soon as the Tensiometer that is