26
Start the Profile
Now that the ‘Shear Motor Profile’ table is com-
plete the system can then be used to start shearing
the sample.
For additional control of the temperature and
image capture during the experiment, refer to the
appropriate sections of the Linksys32 Manual.
To start shearing click on the ‘Start’ button in the
CSS450 Control Panel. The ‘Start Ramp’ turns to
a light blue colour to show that it is the current
active ramp. The Status window message will
change to show that the motors are moving. To
stop the profile, click on the ‘Stop’ button at any
time.
Adjusting the Shear Parameters
Accessing the Setup Menu:
To access the Setup menus for the CSS450. Right
click on the Tool bar within the CSS450 control
panel.
General Setup
Motor Profile Time Units - Specify units for each
Ramp in the Profile by clicking either ‘Seconds’
or ‘Minutes’.
Temperature Source - The Lid and Base have an
independently controlled heating element. The
user can select whether the temperature displayed
in the Live Temperature Window is from the Lid
or Base heater or both (mixed). If ‘Bottom’ is
selected, the T/B indicator in CSS450 control
panel will be lit Green. If ‘Top’ is selected the T/
B indicator will be lit Red. If ‘Mixed’ is selected
the indicator will flash alternately Red/Green.
Rotary Motor Current - The user can set how
much current is supplied to motors. If the sam-
ples have high viscosity, then select ‘High’. In
most cases it is OK to leave this feature set to
‘High’.
Velocities
Withdrawal Velocities - The two variables that
can be changed are related to the referencing of
the CSS450. The Rotary velocity is the speed at
which the bottom shear window rotates as the
Gap is increased. This Rotary Velocity is to help
prevent the shear windows breaking when used
with particularly viscous samples. The Withdraw-
al Velocity is the speed the Lid raises to the refer-
ence point.
Gap Velocity - This is the default speed for the
lid movement (up/down) when following the
Shear Motor Profile.
To Next Page
Loading...
