RST’s Vibrating Wire Piezometers are the electrical Piezometers of choice as the frequency output of Vibrating Wire (VW) devices is immune to external electrical noise and able to tolerate wet wiring common in geotechnical applications.

The Vibrating Wire frequency signal is exceptionally immune from cable effects, including length (to several kilometers), splicing, resistance, noise pickup, and moisture. The Vibrating Wire coil circuit contains no semiconductor devices and has built-in ionized gas discharge device protection against transient damage. As a result, the Vibrating Wire Piezometer provides excellent reliability in typical geotechnical situations – i.e. long outdoor cables buried in saturated soil.

The Piezometer is equipped with a standard low air entry sintered stainless steel porous filter to prevent soil particles from contacting the diaphragm. A thermistor is built into the Piezometer body to permit temperature measurement and temperature compensation of the Piezometer. Standard construction is all stainless steel. RST Vibrating Wire Piezometers are shipped with extremely tough polyurethane-jacketed foil-shielded cable for maximum endurance in field conditions.

Product features

• Field proven reliability and accuracy
• Hermetically sealed, stainless steel construction
• Heavy case to minimize reading errors caused by overburden pressure
• Integral lightning protection
• High Accuracy