DEAD WEIGHT TYPE OIL & WATER CONSTANT PRESSURE SYSTEM:

Introduction:

• This device is used to maintain cell pressure constant for a long duration and the system can be used in place of conventional constant pressure system using mercury pots where certain minimum heights are required.
• Problems like deairiation of pump, leakage of mercury etc are eliminated in this system.
• This unit is smaller in volume and cab be used in mobile laboratory also.
• This can maintain pressure in the cell up to 20 kg/cm sq.
• Pressure is maintained constant in the system by a balancing calibrated weighs on a spindle against a column of oil, operating under constant feedback.

Construction:

• The system consists of an oil pump continuously driven by an electric motor during the test period.
• The internal components are housed in a strong compact housing.
• The piston on which weights are kept rotates with minimum friction.
• A transparent Oil Water vessel is provided to transmit pressure to the cell.
• A hand pump provided facilitates priming and to maintain constant pressure during power failure.

General Description and Specifications:

• Range 0-20 bar (0-20 kg/cm²)
• Steps of Pressure 0.5 bar (0.5 kg/cm²)
• Accuracy + 0.5%
• Electric Supply 230 Volt, 1- Phase, 50 Hz, A.C. supply.
• Supplied complete with Pressure Gauge, flow valves, connecting Pressure hose and set of weights to give maximum pressure of 20 bar (20 kg/cm²).