To measure pore water pressure in the soil, earth/rock-fill foundations and concrete structures, we have EPP-30V. It is a vibrating wire piezometer that is made of stainless steel and hermetically sealed under a vacuum of 0.001 Torr. These sensors have a built-in thermistor for temperature measurement and a surge arrester for protection from lightning. A glass to metal seal solder pin connector is provided for an easy cable connection. Using the grouting technique these piezometers can be mounted at different levels in a borehole.
|Range (MPa)||0.2, 0.35, 0.5, 0.7, 1.0, 1.5, 2.0, 3.5, 5.0, 10.0, specify|
|Accuracy||± 0.25 % fs standard | ± 0.1 % fs optional|
|Non linearity||± 0.5 % fs|
|Over range limit||150 % fs of range|
|Temperature limit||-20° to 80°C|
|Thermistor||YSI 44005 or equivalent|
|Dimension (Φ x L)||42 x 185 mm|