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Smart Field Lysimeter
2.2.4 Aliquot sample taking (option)
Figure 10: apparatus for aliquot sample taking
As an accessory a aliquot sample apparatus can be delivered. The function is to determine the mass of drained substances at each drainage event. Therefore the flask
takes an aliqout sample ratio of about 5% of the water flux drained into the drainage
bottle. The flask of the aliquot sample taking is mounted to the drain water bottle and
thus part of the weight balance.
The sample taking is set up in a way that water runs only into the flask when water is
pumped from the Lysimeter to the drain water bottle. If the pump works in reverse
direction a valve blocks the water flow. So you get water samples in the flask according to drainage events, while the drainage bottle gives you the bulk composition.
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