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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

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