Piezometers and Water Level Meters

Electrical Piezometers


This piezometer pressure cell uses piezoresistive sensors. They can have steel or ceramic membrane; piezometers are available in synthetic material for use in hostile environments, such as the leachate in landfill sites. They are available with different scales and different operating characteristics. Piezometers with integrated dataloggers are also available.
The datalogger can be included either in the body of the sensor or externally, connected to the instrument via cable. For each measuring range, piezometers with different accuracies are available.


Electrical piezometers are mainly used for the measurement of water levels, with the possibility of remote transmission of detected data.
Applications include:

  • Dams
  • Landslides
  • Probe holes
  • Wells
  • Diaphragms
  • Geotechnical, structural and hydrological monitoring

Deep measurements in:

  • Aquifers
  • Piezometric wells
  • Sewage Plants
  • Tanks
  • Lakes and rivers
  • Water treatment plants
  • Landfills
  • Various

Features and Benefits

  • Piezoresistive measuring element
  • Wide range of scales
  • High resolution and sensitivity
  • Excellent sensor speed response
  • High reliability
  • Stainless steel case, fully watertight
  • On request, housing in titanium or in other material
  • Anti-corrosion
  • Compact design
  • Versioni per misura livello relativa o assoluta
  • Measures in relative or absolute pressure
  • Fluid temperature to 150 ° C (on request)

Technical Features

Measuring Range From 1 to 300 meters of water column
Precision ≤±0.25%F.S.; ≤±0.1%F.S.; ≤±0.05%F.S.;
Overcharge 3 x F.S.
Thermal Drifts [± %FS/°C]
– Zero: 0…+70°C
– Span 0…+70°C
Long Term Stability (1 year) < 0.2% FS for ranges > 1 bar
4 mbar for ranges 0.5 < 1bar
Operation Temperature -5….+50°C
Fluid Temperature -5….+50°C
Power Supply 9….30 Vcc
Output signal 4-20mA
Pressure Sensor Material AISI 316L
Material Stainless steel 316  (titanium upon request)
Cable Material PUR/ PUR with compensation tube

Accessories and related products

DL Datalogger with or without integrated modem for data transmission
Compensation Cable For absolute measurements of piezometric pressure
Junction Boxes Available in different models for the connection of different instruments
Multipolar Cable Available with different conductors for the connection of different sensors to one cable
DEC 5 Portable Readout Unit
DEC 3000 Portable Datalogger
CUM 3000 Multichannel Datalogger
MUX Multiplexer for the connection of different sensors to the datalogger

Technical Assistance

If you have any requests or questions about our instruments or if you have special needs that require different solutions from the standard, please contact us. Our team will provide all the necessary information and will be very happy to work with you to study, develop and customize instruments and solutions suitable for your specific needs.

All information in our datasheet is subject to change without prior notice.
Please check the datasheet/details carefully and contact Pizzi Instruments for further information