Conductivity

Conductivity Measurements

• Drip infiltrometer:  Determination of unsaturated hydraulic conductivity characteristic
  Pressure head range: from -1 to – 100 cm
• Ksat -Constant head:  Determination of saturated hydraulic conductivity.  NEN5789.
  Pressure head range: 0 cm (saturated)
• Ksat - Deformation: Determination of saturated hydraulic conductivity as a function of soil deformation c.q. bi-axial strain
• Ksat -Falling head: Determination of saturated hydraulic conductivity of low permeable soils. Pressure head range: 0 cm (saturated) 
• Multi compartment sampler: For measuring water fluxes at a high spatial resolution (100 separate cells, 3.1 x 3.1 cm)
• Capillary rise:   Determination of capillary rise given a certain amount of evaporation, using evaporation method.  
  Pressure head range: from 0 to – 800 cm
• Gravimetrical method: Determination of water content and dry bulk density Pressure head range: arbitrary. NEN5781/ISO11272
• Evaporation method: Determination of water retention characteristic and unsaturated hydraulic conductivity.
  Pressure head range:from 0 to – 800 cm. NEN5791/ISO11275
• Multistep:  Determination of water retention characteristic and unsaturated hydraulic conductivity.
  Pressure head range: from 0 to – 1000 cm