Model 1920 and 1921

External pressure acting on thatsurface is balanced by an equal pressure induced in theinternal fluid.This pressure is converted by the pressure transducer intoa frequency signal to the readout.Correct record is provided by sensors, and sensors areoperated automatically, within water pressure chamber, it isindividually inspected, so confidence is guaranteed.The pressure transducer is equipped with a temperaturedevice for compensating for temperature variations.

The model 1920 & 1921 are designed to measure total pressure on retaining walls and slurry walls. It must be usewith a hydraulic jack, a bearing plate and a reaction plate.Features

Features

• Stability and reliability in extreme environment

• Not affected by cable length and resistance change,Reproducibility and repeatability are very excellence

• Possible to automatic measurement

Applications

The VW earth pressure cells are used to verify design assumption and excess pressure on the structures.

• They also measure the combined pressure of effectivestress and total pressure.

• Collection data to determine the distribution of,orientation of magnitude of total stressMeasurement of the contact pressure on and foundations

• Measurement of total pressure on the structures during heave

• Checking of density of fills in dams