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Multilevel Piezometer (VW) | Model 4500MLP

  • Model 4500MLP Multilevel Piezometer shown in open position.
  • Model 4500MLP shown in closed, pre-installed configuration.
Model 4500MLP

The Model 4500MLP system overcomes the problems associated with the installation of multiple piezometers in a single drill hole. The 4500MLP is lowered into position and a spring loaded apparatus is actuated forcing specially configured piezometer filter elements into firm contact with the borehole walls. The borehole is then grouted from the bottom in one quick and simple operation.*


Standard Ranges¹
70, 170, 350, 700 kPa; 1, 2, 3, 5, 7.5 MPa
Over Range
1.5 × rated pressure
0.025% F.S. (minimum)
±0.1% F.S.
<0.5% F.S. (±0.1% F.S. optional)
Temperature Range
−20°C to +80°C
Borehole Diameter
100 to 150 mm

¹Piezometers with a range of 350 kPa and higher are capable of reading negative pressures to −100 kPa. Please contact GEOKON for more information. Other ranges available on request.

*Please Note: All GEOKON vibrating wire piezometers include tripolar plasma surge arrestors to protect the sensor coils from possible lightning damage. Semiconductor piezometers are also available (see 3400 Series).

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.