MTS Model 286-20 Confining Pressure Intensifier - Manual (Page 41)

Operating Procedures
286.20 Pressure Intensifier Operation 41
Cooling The Triaxial Cell and Confining Fluid
Temperature of fluid in the triaxial cell can exceed the temperature rating of
the Confining Pressure Intensifier.
This could damage the Confining Pressure Intensifier.
Always allow fluid in the triaxial cell to cool to 167 ∞F (75∞C) or less before
emptying the triaxial cell back to the reservoir of the Confining Pressure
Intensifier.
The CPI has a temperature rating of 167°F (75°C). Many triaxial cells have
higher temperature ratings. Confining fluid in the triaxial cell must be allowed to
cool to 167°F (75°C), or below, before being recirculated into the Confining
Pressure Intensifier. If fluid having a temperature higher than 167°F (75°C) is
allowed to circulate into the CPI, the acrylic reservoir and associated flexible
tubing can be damaged.
There are no operational steps involved in allowing the triaxial cell and its
confining fluid to cool. Do not operate the CPI or cause hot fluid to flow into the
CPI while the triaxial cell is cooling.
CAUTION
Triaxial
Cell
Open Close
Confining Fluid Input
Open Close
Confining Fluid Output
Open Close
Reservoir Fill
Fluid
Reservoir
Open Close
Intensifier Fill
Pressure
Intensifier
Low Pressure
Relief
Pressure
Transducer
Low pressure line
High pressure line
286.20
Confining
Pressure
Intensifier
r
Fluid Filter
Off
Fluid Transfer Pump Control
Air supply in
100 psi max.
Air Driven
Hydraulic
Pump
Fluid Direction
A
B
C
C
A
B Empty
Reservoir
From fluid
supply or to
empty fluid
Fill system from
fluid supply
using pump
Fill system
from reservoir
using pump
Confining
Pressure
A B
A
B
Air Direction
Air supply into empty
traxial cell.
Bleed air into reservoir
when filling triaxial cell.
psi
bar
High Pressure
Relief
Air Pressure
Relief
Cooling the Triaxial Cell and Confining Fluid
CAUTION
Do not allow hot fluid (above 167°F (75°C)
to be recirculated back into the CPI.