MTS Model 286-30 Pore Pressure Intensifier - Manual (Page 28)

286.30 Pressure Intensifier 28
Pore Pressure System Operation Considerations
Operation
Effects of Air in the System, Need to Expel
The operating procedures provided in this section include instructions for
removing air or gases from the pressurized parts of the system whenever that is a
concern.
Large volumes of air can affect system response time, when operating in the
pressure control mode, or affect the expected relationship between pressure and
volumetric displacement, when operating in the displacement control mode,
especially when low pressures are involved.