VW Earth Pressure Cell

VW Earth Pressure Cell

The Model 4800 Earth Pressure Cells are designed to measure total pressure in earth fills and embankments. All cells consist of two circular stainless steel plates welded together around their periphery and spaced apart by a narrow cavity filled with de-aired oil. Changing earth pressure squeezes the two plates together causing a corresponding increase of fluid pressure inside the cell. A vibrating wire pressure transducer converts this pressure into an electrical signal which is transmitted to the readout location.

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    Instrumentation Cable - 2 shielded twisted pair (22 awg) with drain wire, 0.250" diameter, blue PVC jacket.

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Features & Applications
Specifications
Downloads
Options & Accessories

Features

  • Proven and reliable vibrating-wire technology 
  • Wide variety of pressure ranges and configurations 
  • Automatically provides total soil & water pressure 
  • Heavy-duty instrumentation cable pre-installed  
  • Excellent stability for long-term measurements 
  • Stainless steel construction resists corrosion 

Applications

  • Bridge abutments 
  • Retaining walls 
  • Sheet piling 
  • Tunnel linings 
  • Pile tips 

specifications

Standard Ranges1 70, 170, 350, 700 kPa; 1, 2, 3, 5, 7.5, 20 MPa
Over Range 1.5 × rated pressure
Resolution 0.025% F.S.
Accuracy2 ±0.1% F.S.
Temperature Range1 −20°C to +80°C
Height × Diameter1 6 × 230 mm

 

¹ Other ranges and sizes available on request.
² Transducer accuracy established under laboratory conditions. Total system accuracy (pressure transducer + pressure cell) is subject to site-specific variables.

* Please Note: Models are also available (3500 Series) with semiconductor pressure transducers to enable measurement of dynamic pressures (please contact us for details).

downloads

Options & Accessories

  • Pressure ranges up to 2,900 psi (20 Mpa) 
  • Static or dynamic pressure transducer 
  • Custom connectors for A/D system interface 
  • Intelliducer support for dynamic pressures