Chapter 3: Use
21
FACTORY-SET TUNING PARAMETERS
Retune your TDC5 with your cell system before you use it to run any real tests. Retune whenever you make
major changes in the thermal behavior of your system. Typical changes that may require retuning include:
Changing to a different cell,
Addition of thermal insulation to the cell,
Addition of a cooling coil,
Changing the position or power of the heater, or
Changing from an aqueous electrolyte to an organic electrolyte.
In general you do not have to retune when switching from one aqueous electrolyte to another. Tuning is
therefore only an issue when you first set up your system. After the controller has been tuned for your system,
you may ignore tuning as long as your experimental setup remains relatively constant.
Restoring Factory Settings
The TDC5 is configured using many settings (fully listed in Appendix A) which can be entered by a complicated
user interface using the four buttons on the front of the TDC5. We anticipate that anyone using this interface is
likely to scramble the TDC5 settings at least once. Various
“automatic” TDC
5 operations could also result in
incorrect settings, especially if they are interrupted in mid-operation.
Re-entering all the default settings manually would be time-consuming and error-prone. For this reason, Gamry
Instruments has provided an Explain script that resets all TDC5 settings to the default settings:
Start the Gamry Instruments Framework
™ software
.
Select
Experiment > Named Script
…
> TDC5 Initialize Settings.exp
from the Framework menu. (The
Framework script that resets the TDC5 is
TDC5 Initialize Settings.exp
).
When this script runs, it displays a
TDC5 Quality Check
window similar to that in Figure 3-1.
Figure 3-1. Initial Dialog Box Displayed by a TDC5 Script
When you click the
OK
button, the script sends configuration data to the TDC5.
Parameter (Symbol)
Setting
Proportional Band 1
9
C
Reset 1
685 s
Rate 1
109 s
Cycle Time 1
1 s
Dead Band
14 db
