Hydraulic Piezometer

For the measurement and control of water pressures in soil and rock, the Hydraulic Piezometer is able to measure both positive and negative pressures.
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The Hydraulic Piezometer is used for accurately measuring pore water pressures in fully or partially saturated soil and rock.

The system comprises a porous ceramic piezometer tip sealed into the measuring horizon and connected to a remotemeasuring position via twin nylon hydraulically filled tubes.

The piezometer measures overall hydraulic pressure from which pore pressures can be calculated.

Product Features 
  • Simple and reliable device
  • Accurate with excellent long term stability
  • Fast response to pressure changes
  • Inaccuracies due to air entrapment and gas accumulation at the piezometer tip are avoided 
  • Capable of measuring pore pressures from 2000 kPa to –50 kPa
Product Benefits 
  • No electronic components in tip ensures long-term reliability
  • Twin hydraulic tubing is strong, flexible and suitable for long-term use
  • Comprises all non-corroding materials
  • Pressure measurement takes place at the terminal location and not within the piezometer tip



The Hydraulic Piezometer is designed for the accurate measurement of pore water pressures in fully or partially saturated soil and rock.

The Piezometer tip comprises a porous ceramic filter vessel.

Twin hydraulic tubes connect each filter tip to a remote reading terminal where the hydraulic pressure may be read by either a Bourdon gauge or an electrical pressure transducer.

The hydraulic system is flushable so that air or gas accumulation

at the piezometer filter tip which can produce reading inaccuracies and time lag, can be fully removed to provide a ‘hard’ hydraulic circuit.

In addition, the hydraulic piezometer system may be used for constant head permeability testing of the ground in which the piezometer tips are installed.



Piezometers are used in geotechnical, environmental, and hydrological applications. They can be installed in boreholes and placed in fill materials or open wells to measure water levels or pore water pressures to enable engineers to verify design assumptions and control placement of fill.

Typical applications include:

  • For environmental management including landfill sites
  • Monitoring of aquifers
  • Monitor tidal effects on coastal soils
  • Dams
  • Embankments
  • Potential landslide sites
  • Dewatering excavations
  • Tailings lagoons
  • Pumping tests
  • Monitor seepage
  • Control placement of fill


W2 - Hydraulic Piezometers Datasheet

Click here to download [PDF] 

This downloadable PDF is the new itmsoil datasheet.

Man046 - Hydraulic Piezometers User Manual 

Click here to download [PDF]




Western Australia

Perth Office

209/396 Scarborough Beach Road
Osborne Park
WA 6017


New South Wales

Sydney Office

Unit 137, 18 Buchanan Street
NSW 2041

t: +61 (0) 8 9284 0244
f: +61 (0) 8 9284 0233
e: info@itmsoil.com.au
  t: 1300 884 542

e: info@itmsoil.com.au