User guide

17
Basic Operation
4. Select the particular tube to be used as the basis for calculations by touching
on the tube name. The pull down will roll up and the selected entry will
occupy the text box labeled “Compound”.
As soon as the tube is selected, the Concentration Range line will be populated
with the minimum and maximum concentration available with this tube.
5. Input the desired concentration by pressing inside the white text box labeled
“Concentration” and using the pop-up numeric keypad to enter the value
desired. (If a value outside the available range is requested, the value will be
forced to the closest value achievable.)
6. Touch the “Enable” button to initialize the instrument in Auto mode with
the requested settings. Failing to select “Enable” and leaving this screen will
render the input invalid.
NOTE: When changes to this screen are made, the Status indicator will be red for
a preset period of time. This time is dependent upon the kind of change made
and the length of time required for the change to become equilibrated. For
example, resetting the permeation chamber temperature from 30°C to 75°C
could require up to two hours to reach equilibration, at which point the Status
indicator will change to green.
Quick Glance Status Bar
The Dynacal 235 touch panel provides a continuously visible display at the
bottom of the screen for an easy view of the current status of the instrument.
(Figure 11) The user can verify at a glance the overall status (Ready/Not Ready),
the concentration of the selected calibrant, and the current Mode of operation
(Auto/Manual). The user may also select and verify all other active permeation
tube concentrations by touching inside the Device box and selecting from the
pull down of installed devices. Concentration will update upon selection.
Figure 10: Model 235 Auto screen
ONCE DATA IS ENTERED,
SELECT ENABLE TO
SAVE THE CHANGES
Figure 11: Quick Glance Status Bar
STATUS INDICATOR PERMEATION DEVICE
DISPLAY AND SELECTOR
CONCENTRATION
INDICATOR
MODE
INDICATOR