Catalogue SOILMATIC - Pressure / Volume maintainer - Advanced

S0169_SM.pdf S0169_SMI.pdf

Pressure / volumen maintainer - Soilmatic Advanced

Ref.: S0169/SME

Pressure / volumen maintainer Advanced

Pressure range: Customer requirements

Volume capacity: Customer requirements

Interface: Touchscreen / USB Connection

The Proeti Advanced Pressure/Volume Maintainer is a general-purpose water pressure source and volume change gauge. It is designed for use in commercial and teaching soil mechanics laboratorios, Universities and Research Centers. A motor and screw-drive actuate a piston which directly pressurises water. The pressure is regulated under closed-loop control (PID). The change in volume is measured to 1 mm3 (0.001cc) by counting the pulses (encoder). Using an additional encoder volume resolution can be increased.

The Pressure/Volume Maintainer provides a cost-effective direct replacement for conventional soil mechanics laboratory pressure sources and volume change gauges. Above all, the device has its own computer interface and so can be controlled directly from a computer. It is ideal as a back pressure source where it can also measure the change in volume of the test specimen.

Also, it automatically protects itself from pressure and volume over-ranges In stand-alone mode, the instrument is a constant pressure source which can replace traditional laboratory pressure sources such as mercury column, compressed air, pumped oil and dead weight devices

The device can be controlled directly from a computer using its own full speed USB 2.0 / 3.0 interface.

EDS software supplied allows full controller functionality to be accessed by means of the full speed USB 2.0 interface. The software allows the user to program “n” pressure steps that can be either incremental or decremental, this is very useful to program a saturation.

The instrument may also be controlled via the touchscreen without the need of a PC.

The pressure / volume maintanier automatically protects itself from pressure and volume overranges.


Pressure / volumen maintainers can be used:


  • Pressure cell
  • Backpressure.
  • Volume change device.


  • Can be used as high precison volume change device. (0,014 mm3)
  • Can be used where a high precison pressure is needed
  • Can be used in research projetcs where a hydraulic gradient is needed.


  • Triaxial
  • Permeability

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