Geneq > Environment > Soil-Permeability
Hydraulic Conductivity Measuring Device
 

Apparatus measuring ten ring samples for automatic determination of unsaturated hydraulic conductivity
(ku) as a function of water content and tension, and of the pF curve.

Measuring principle:
  • Flow process through soil water evaporation on a free surface of initially saturated soil samples
  • Flow rate recording through periodic weighing of samples
  • Recording of the gradient of water movement with two tensiometers along the flow line
  • Test run with ten soil samples simultaneously through computer-controlled sample cycling for weighing and tension measurement
  • PC program for analysis of measured data

Technical parameters:
Number of samples max. 10 Measuring range kuvalue < 10 cm/d
Sampling ring volume 250 cm3 Weight of apparatus ca. 40 kg
Cross-sectional area of sampling cylinders 41 cm2 Size ca. 100x70x40 cm
Time interval of individual measurement min. 15 min Power consumption 220V/ 1A
Weighing resolution 0,01 g PC connections COM 1
Tension range 0...700 cm WS
(pF 2,8)		 Test duration 2 - 10 days
(depending on soil type)