Product Code : MSI 3061

Product Description

The MSI 3061 Dead Weight Type Oil & Water Constant Pressure System is designed to maintain constant cell pressure for extended-duration soil and triaxial tests. It provides a compact alternative to conventional mercury-pot constant pressure systems and eliminates the need for the minimum elevation required by mercury systems.

The system uses a continuously driven oil pump and a calibrated dead-weight arrangement to maintain pressure against a column of oil under constant feedback. Its compact construction makes it particularly suitable for mobile laboratories and applications where reliable long-duration pressure control is required.

A hand pump is provided for convenient priming and for maintaining pressure during temporary power interruptions.

Key Features

• Maintains constant cell pressure for long-duration testing.

• Maximum pressure up to 20 kg/cm² (20 bar).

• Compact design suitable for mobile laboratories.

• Eliminates mercury leakage associated with conventional mercury-pot systems.

• No minimum mercury-column height requirement.

• Continuously driven oil pump.

• Low-friction rotating piston and calibrated dead-weight system.

• Transparent oil/water vessel for pressure transmission to the cell.

• Hand pump for priming and pressure maintenance during power failure.

• Supplied with pressure gauge, flow valves and pressure hose.

• Complete with calibrated weight set.

Technical Specifications

Model : MSI 3061

Product Name : Dead Weight Type Oil & Water Constant Pressure System

Pressure Range : 0–20 bar (0–20 kg/cm²)

Pressure Steps : 0.5 bar (0.5 kg/cm²)

Accuracy : ±0.5%

Pump : Motor-driven Oil Pump

Pressure Control : Calibrated Dead Weight / Feedback System

Pressure Transmission : Transparent Oil/Water Vessel

Power Supply : 230V, Single Phase, 50 Hz AC

Maximum Pressure  : 20 bar (20 kg/cm²)

Construction & Working Arrangement

The system consists of a compact, robust housing containing the oil pump and pressure-control mechanism. During operation, the electric motor continuously drives the oil pump.

The piston carrying the calibrated weights rotates with minimum friction. The dead-weight arrangement acts against the oil column to maintain the selected pressure. A transparent oil/water vessel transfers the controlled pressure to the test cell.

The integrated hand pump allows the operator to prime the system and maintain pressure when the electrical supply is temporarily unavailable.

Supplied Complete With

• Motor-driven oil pump

• Transparent oil/water pressure vessel

• Pressure gauge

• Flow valves

• Connecting pressure hose

• Calibrated set of weights for pressures up to 20 bar (20 kg/cm²)

• Hand-operated priming pump

• Compact housing and complete assembly

Applications

• Triaxial soil testing

• Long-duration consolidation and soil testing

• Constant cell-pressure applications

• Geotechnical laboratory testing

• Soil mechanics research

• Mobile soil testing laboratories

• Research and quality-control laboratories

Advantages

Compact: Suitable where laboratory space is limited.

Stable: Designed to maintain controlled cell pressure over extended testing periods.

Mobile: Compact construction makes it suitable for mobile laboratory applications.

Reduced Mercury Handling: Uses an oil/water pressure system instead of a conventional mercury-pot arrangement.