Vibrating Wire Piezometer
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.
- Description
- Characteristics
- Solutions
- Model information
-
Струнный пьезометр
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
-
Technical specifications
- Over range 1.5 X F.S.
- Resolution 0.0025% F.S. minimum (readout dependent)
- Repeatability 0.025% F.S.
- Accuracy 0.1% F.S.
- Linearity <0.5% F.S.(+/- 0.1% F.S. optional)
- Operating Temperature -20 to 80°C (-4 to 176°F)
- Diaphragm Displacement <0.001 cc at F.S.
- Thermal Zero Shift <0.05% F.S./°C
- Materials Hermetically sealed stainless steel housing
- Thermistor Type NTC 3K Ohms @ 25°C
- Thermistor Interchangeability ±0.2°C
- Thermistor Resolution 0.1°C
- Filter 50 micron sintered filter. (High air entry alumina filter 1 Bar available)
- Electrical Cable Specifications
- EL380004 Two twisted pairs cable with polyurethane jacket
- EL380004HDL Two twisted pairs heavy-duty cable with a thick polyurethane jacket mold for added protection
- EL380004K Two twisted pairs Kevlar® reinforced, non-stretch polyurethane jacketed cable for rigorous installations where the stretching of cable is a concern
-
The vibrating wire piezometer is precisely used for:
- Vibrating Wire Piezometers are commonly used for: Assessing performance and investigating stability of earth fill dams and embankments. Slope stability investigations. Monitoring water levels in wells and standpipes. Monitoring pressures behind retaining walls and diaphragm walls. Monitoring pore pressures during fill or excavation. Monitoring pore pressure in land reclamation applications.
-
Technical specifications
Part # Description - Pressure range Cable length VW2100-0.35-L20 Vibrating Wire Piezometer 0.35 MPa 20m VW2100-0.35-L30 Vibrating Wire Piezometer 0.35 MPa 30m VW2100-0.35-L40 Vibrating Wire Piezometer 0.35 MPa 40m VW2100-0.35-L50 Vibrating Wire Piezometer 0.35 MPa 50m VW2100-0.7-L30 Vibrating Wire Piezometer 0.7 MPa 30m VW2100-0.7-L50 Vibrating Wire Piezometer 0.7 MPa 50m VW2100-0.7-L75 Vibrating Wire Piezometer 0.7 MPa 75m VW2100-1.0-L50 Vibrating Wire Piezometer 1.0 MPa 50m VW2100-1.0-L75 Vibrating Wire Piezometer 1.0 MPa 75m VW2100-1.0-L100 Vibrating Wire Piezometer 1.0 MPa 100m VW2100-1.0-L150 Vibrating Wire Piezometer 1.0 MPa 150m VW2100-2.0-L100 Vibrating Wire Piezometer 2.0 MPa 100m VW2100-2.0-L150 Vibrating Wire Piezometer 2.0 MPa 150m VW2100-2.0-L200 Vibrating Wire Piezometer 2.0 MPa 200m VW2100-3.0-L250 Vibrating Wire Piezometer 3.0 MPa 250m
Leave a request — we will find
a solution for your facility
We will contact you, discuss the details and find a format
that is mutually beneficial.