The EPS-30V-S earth pressure cell is used to measure total pressure in the earth fills and embankments. Two stainless steel discs welded around the periphery forms a flexible, circular and flat pressure pad. The pressure pad is connected to an electron beam welded vibrating wire pressure sensor with a 6 mm diameter x 165 mm long stainless tube. The narrow cavity between the pressure pad and the tube is filled with de-aired fluid. Pressure applied by the earth on the capsule is transmitted through the fluid to the vibrating wire pressure sensor, which converts it into an electrical signal.
|Range (MPa)||0.5, 1.0, 2.0, 3.5, 5.0,10.0, specify|
|Accuracy||± 0.5 % fs standard | ± 0.1 % fs optional|
|Over range limit||150 % fs of range|
|Temperature limit||-20° to 80°C|
|Thermistor||YSI 44005 or equivalent|
|Pressure pad size||200 mm Φ x 7 mm thick|