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 de-airation of
pump, leakage of mercury etc. is eliminated in this system .
This unit is smaller in volume and can be used in mobile
laboratory also. This can maintain pressure in the cell upto
20kg/cm sq. Pressure is maintained constant in the
system by a balancing calibrated weights on a spindle
against a column of oil, operating under constant feed back.
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
Specification:
- Range 0-20 bar(0-20kg/cm2)
- Steps of pressure 0.5bar (0.5kg/cm2)
- Accuracy + 0.5%
- Electric supply 230V, Single Phase, 50Hz, AC supply.
Supplied complete with pressure gauge, flow valves,
connecting pressure hose and set of weights to give
maximum pressure of 20 bar (20 kg/cm
2)