In principle it is possible to design the soil water
permeameters in any required size. The size is determined by the number
of soil samples of which the saturated water permeability is to be
determined simultaneously. Designs for 5 up to 25 soil sample rings can
be supplied. The permeameters are available for soil sample rings with
an external diameter of 53 or 60 mm..

Open and closed systems

A closed or an open system can be applied. In case of a closed system
a storage cistern, a circulation pump and a filter are provided. If an
open system is applied these attributes are not needed, as in this case
the setup allows a connection to the main water supply and drainage to
take place in a washing basin.

A closed system offers the facility to measure other fluids than
water from the main water supply. In case of samples from a salty
environment, for instance, salt needs to be added to the water.

Applications

The soil water permeameter is used for measuring the saturated
permeability of undisturbed soil samples in sample rings. The
permeability factor (K-factor) gives accurate information about:

• The presence of disturbing soil layers which prevent a speedy outflow of precipitation.
• The correlation between permeability and other soil properties such as porosity, granular composition, etc.
• The vertical and horizontal permeability. With these data one can derive further conclusions for the benefit of:
• Irrigation and drainage systems.
• Well pumping.
• Subsidence phenomena.
• Predictions concerning the spread of polluting fluids resulting from calamities.
• Soil improvement- and maintenance advice.