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Important Enhancements to Gamry Software
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Version 5.60 will operate with the Reference 600TM,
the Reference 3000TM, the PCI4TM
family of Potentiostats, and the Series G family of Potentiostats. It will not operate with PC4 or PC3 family
Potentiostats. PCI4 users will be able to download
and run Version 5.30 using their existing Version 4.x Authorization
codes. There is no charge for this upgrade!
This new version adds some new capability to the Gamry
FrameworkTM and to the Echem AnalystTM
and corrects some bugs.
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Support for Windows 7TM!
Starting with Version 5.60, the Gamry software is compatible with the
32-bit and 64-bit versions of Windows 7, Vista, and XP Operating Systems.
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"Equilibration Time" Added
to Several Corrosion Techniques
With most electrochemical experiments, it's
OK to apply the potential and begin to scan. But not all! For
example, starting to scan immediately with rebar in concrete will result in
a boomerang-shaped response. These samples need to "equilibrate" for
some time after the voltage is applied but before the scan is initiated.
We've added "Equilibration Time" to several techniques in Version 5.60.
These include Polarization Resistance and Tafel Plots.
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New Icons
New desktop icons are used for the Gamry FrameworkTM
and Echem AnalystTM programs and for the
shortcut to your My Gamry Data folder. These icons are Vista
compatible and really spiffy.
Goodbye beaker and op-amp! Hello Erlenmeyer! Goodbye
notebook! Hello magnifying glass! Time marches on.
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An Important Note for Upgraders!
Beginning with Version 5.20 some important changes in the
Folder/Directory structure were implemented for ease of use with Windows
Vista. If you have Custom Framework scripts or Custom Echem Analyst
GScripts, or are just looking for your data, you can read the details
of the changes here.
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An Important Fix for PHE200TM
and PV220 Users!
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Beginning with Version 5.10, a bug was corrected in the Positive Feedback iR
Instrument Firmware for the Reference 600 and the drivers for the PCI4
family Potentiostats. Reference 600 users must update their Instrument
Firmware to Version 1.50 or later to fix this bug! For PCI4 users, no special
action is required. The drivers will be updated when the Framework
Version 5.21 is installed.
Reference 600 users:
Consult Chapter 4 of the Reference
600 Operator's Manual ( PDF
) under "Firmware Update", or download just that section here.
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Version 5.21 corrected a bug in the Echem Analyst GScript
for Cyclic Voltammetry.
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Gamry FrameworkTM
Changes
The THE Repassivation Potential experiment has been added to the DC105. This method is currently undergoing an ASTM round-robin.
Three new techniques have been added to the PHE200: Repeating
Chronoamperometry, Repeating Chronopotentiometry, and Multiple Step
Potentiostatic. While these techniques are different from each
other, they all have to
do with multiple excitation pulses/steps with response measurements during the
pulse. -
Beginning with Version 5.21 support for the Reference 600's new
"Low Impedance Cell Cable Kit" (990-239) was added. This new cell cable gives increased
EIS accuracy for low impedance cells, such as fuel cells and batteries.
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We have added a new Utilities selection to the
Experiment Menu.
This new section contains the links to Instrument Calibration, as well as
measurement of Open Circuit Potential and measurement of Uncompensated
Resistance by a modified EIS method. A simple Set a Voltage or Set a
Current selection has been added to let you simply apply a current or
voltage to your cell. The Utilities selection also allows you to
pre-select one of the eight channels of an ECM8 Multiplexer so that you can
run a normal (non-multiplexed ) experiment on that cell without having to
move any cell cables.
These selections on the Utilities menu are available to all Gamry users. No
specific Authorization Code is required.
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Echem AnalystTM
Changes
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DC105 DC Corrosion Software
Post-Run iR correction is now available for many of the techniques in the
DC105. This allows the user to correct for a known or assumed
Uncompensated Resistance in the cell after the experiment has been run.
A Tafel analysis can now be performed even if the Ecorr has changed from the
start of the experiment.
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PHE200 Physical Electrochemistry and PV220 Pulse
Voltammetry Software
The analysis for Cyclic Voltammetry has been enhanced with
the addition of an "Automatic Baseline" selection on the Cyclic
Voltammetry menu. Using this selection will automatically draw a
baseline through the linear background immediately preceding the peak and
recalculate the peak height using this baseline.
A new option on the Tools/Options/Units tab allows the
user to display current with either the Anodic Current is Positive or the
Cathodic Current is Positive convention. The convention in place when the
experiment was run is taken into account.
Post-Run iR correction is available for Cyclic Voltammetry.
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EIS300 Electrochemical Impedance Spectroscopy
Two new selections have been added to the Impedance menu:
Subtract Impedance and Kramers-Kronig.
The
Subtract Impedance selection allow you to subtract a
circuit element (R, C, etc.), an equivalent circuit model, or previously
measured spectrum from your data set.
The Kramers-Kronig selection uses the K-K Transform
of your data to calculate the spectrum of a Linear, Stable, and Causal
circuit. No model is assumed. The K-K Transform is shown on the Bode and
Nyquist plots. If the K-K Transform and the experimental data do not agree,
then the sample may exhibit non-linearity, instability, or the influence of
unknown variables (non-causal).
A script "EIS Model Simulation Script.GScript" has been added
to allow you to simulate the EIS results for any Equivalent Circuit
Model. You can easily change the parameter values and see the
results. You may also fit these simulated results to another
model. This will allow you to answer questions like "Can I tell
the difference between two models?" or "What happens if my
double-layer capacitance is really a CPE, but I used the Randles model to
analyze it?"
Two Calculators have been added to the Common Tools Menu that allow you to
calculate the "True Capacitance" from a CPE model.
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