Physical Construction

 
T he physical configuration of the system is integral to its utility by ESI.  The primary design constraints are:
Cylinder: The cylinder in which the interface occurs must be longer than the operating length of a Flo.Point meter, approximately 24 inches.
Reservoirs: The reservoirs must contain enough fluid (oil and water, individually) to completely fill the cylinder and all attached Flo.Point devices.
Control: There must be a pump mechanism for forcing the water up the system, and a valve mechanism for arresting the flow of liquid long enough to take a measurement.

It is also desirable to provide simple facility for changing the fluids in either reservoir, since different grades of oil and salinities of water must be tested.  Finally, all components must be resistant to petroleum caustics which will exist in some grades of oil.