Tensior T8 - Eijkelkamp Agrisearch Equipment

2. Fill the syringe and the connected rubber tube with water. Attach the
syringe to the refilling tube.
3. Continuously inject water into the filling tube while monitoring the pressure
signal at any time. Water and bubbles arise from the de-airing tube. Stop
injecting water when no more air bubbles appear.
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Caution: Do not let the pressure exceed 2000 hPa !
4. Remove the syringe. Put a drop of water on both rubber and steel tube's
end to avoid that any air will get into the tubes. Connect both.
With this method a measuring range of approx. 800 hPa can be achieved.
5.4 Refilling with vacuum
To reach the full measuring range the Tensiometer water can be degassed
even more completely by using a vacuum. This method can be applied for
installed or not installed Tensiometers, in any installation angle and for refilling
tubes longer than 5 m.
The refilling kit BKTex contains all required tools:
- manual vacuum pump and vacuum bottle with tube and valve
- syringe with valve
Procedure:
1. Connect the T8 to the measuring device and keep an eye on the pressure
signal at any time. Pull off the rubber tube from the refilling tube.
3, The syringe as well as the tube on the syringe should be filled with degassed
water. Close the valve (!) and connect syringe and refilling tube.
2, Connect vacuum bottle and de-airing tube. Now, evacuate the bottle to the
maximum possible vacuum. This will enlarge the remaining bubble inside the
cup. Briefly open and then close the valve of the syringe to let water flow
into the Tensiometer. The air bubble will be sucked into the vacuum bottle.
Repeat this 2 or 3 times until no bubbles come out anymore.