Carlson Piezometer

Carlson Piezometer

A device to measure water pressure in the pores of granular material such as soil.
Water pressure in the pores of a granular material like soil reduces the internal friction and therefore the stability. This pore pressure can be measured by a device which separates the water pressure from the intergranular pressure. In the CARLSON pore pressure cell, the water pressure is admitted to an internal diaphragm through a porous disc which holds back the soil or other granular material. The deflection of the internal diaphragm is measured with the same sensing element as is used in the stress meters.

Key Features:

-Zero displacement
-50 year track record
-Integral temperature measurement
-Proven CARLSON design

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