PRODUCT FEATURES:

• Piezometers (electrical resistance or vibrating wire) are designed for accurate and long term pore water pressure measurement in fully or partially saturated soil and rock.
• Both Vibrating Wire or Electrical Piezometers are robust, have excellent long term stability and can be used with long cable lengths without any signal degradation.
• The piezometer comprises a porous filter tip element (high or low air entry) integral with a diaphragm type pressure transducer.
• A cable connects the transducer to a read-out, terminal unit or data-logger and the data is then recorded and converted to engineering units.
• Piezometers are installed in different ways depending on the application and soil condition. Typically, they are installed in fully grouted boreholes (or surrounded by a sand filter) at the desired depth (a bentonite plug may be formed above the sand filter, if present, and the remainder of the borehole is filled with a bentonite-cement grout).
• Electrical resistance sensors output mA signal
• Vibrating wire sensors output frequency signal

PRODUCT BENEFITS:

• Small diameter devices, accurate and small with excellent long term stability
• Accuracy unaffected by cable length
• Fast response to pressure changes
• Manufactured from high grade stainless steel for extended operation
• Over-voltage surge arrestor fitted to protect against electrical damage
• Hermetically sealed, ensures long working life of the instruments
• Advanced designs prevents case stresses from affecting readings
• Compatible with WASP and Campbell dataloggers for easy automation

TYPICAL APPLICATIONS INCLUDE:

• Measuring slope stability
• Safe placement rate of fill or excavation
• Design and build for lateral or uplift pressures or buoyancy
• Monitoring the performance of earth-fill dams and embankments
• Monitoring groundwater, seepage and verify models of flow
• Monitor surface water run-off and water levels at contaminated sites, etc.