PG580RM Potentiostat-Galvanostat - Andreescu Labor & Soft

PG580RM
Potentiostat-Galvanostat
Multi-Channel
The Uniscan PG580RM is a high quality, digital scanning
multi-channel potentiostat system. The design provides
a user-configurable instrument for demanding research
applications.
Research laboratory performance
From 2 channel to 14 channel operation
System configurations up to 98-channels
USB connection
User programmable techniques via powerful macroprogramming
language
Ultra-low noise, low current performance
Multi-channel and multiplexing capabilities
Powerful Windows TM software with full suite of
electrochemical and corrosion techniques
The design of the PG580RM makes it an ideal choice for
use in the following application areas
Materials characterisation
Electrochemical sensors
Combinatorial electrochemistry
Screening of fuel-cell catalysts
Microbial influenced corrosion studies
Multichannel measurements of pH and chloride
concentrations in corrosion studies
uniscan instruments
www.uniscan.com

Features
High throughput combinatorial
micro electrochemistry
Electrosynthesis is an effective way to produce
chemical transformations by utilising redox reactions.
Libraries of specific ions can be generated in the
wells of microtitre plates by potentiostatic electrolysis
under the computer control of the PG580RM
multichannel electrochemical system. As an online
technique the multi-channel system allows a very fast
assessment of the redox state during the electrolysis.
The PG580RM has unique features which makes
it an ideal choice where high sample throughput is
a requirement. The PG580RM’s modular concept
means it can be configured to create a user defined
system from a 2-channel up to a 14-channel system
within the same chassis. By connecting a 14-
channel chassis to other RM units an extended
system is created. A ninety-eight sensor array can
be individually addressed by ‘chaining’ together
seven 14-channel systems. The software treats the
combined units as one system.
Multiplexing Capabilities
Where high throughput is not essential but high
productivity needs to be achieved the user can make
use of the multiplexing capabilities of the RM system.
Each individual channel can, with the appropriate
cable set, sequentially address up to five working
electrodes making a cost effective solution to working
with multiple electrodes.
The system can also be configured to have one
counter electrode, one reference electrode but
multiple working electrodes. This feature makes the
instrument suitable for applications such as multipoint
corrosion monitoring applications or fundamental
research of potential variations along a polarised ribbon
electrode.
Autosequencing
The software permits auto-sequencing of experiments.
Experiment chains such as E CORR
vs. Time, LPR, Tafel
and Potentiodynamic scans can be accomplished
without the need to manually start the next
experiment. You can also include loops so that a
group of experiments is repeated a number of times.
Data is automatically transferred to the computer for
subsequent analysis.
Analogue Triggering
Capability
The PG580RM modules have a real time analogue
triggering facility. The triggering can be configured to
execute on high or low thresholds of current, potential
or auxiliary voltage. The triggering provides sub
millisecond timing accuracy and can offer both pre and
post trigger data as required.
A typical application would be an electrochemical
sensor where a small initial potential is set between
the electrodes to detect the point when an analyte
comes into contact with the electrodes. The trigger
facility allows the instrument to apply waveforms and
measure with precision timing relative to such an
event.
2

Software
The software supplied with the
PG580RM, either UiEChem TM or
UiECorr TM , is a comprehensive
and fully featured package which
encompasses a wide selection
of standard electrochemical
techniques. All this is combined
with an easy-to-use graphics
interface. After a technique
has been selected a waveform diagram is displayed
showing the structure of the experiment. At the
same time the user can enter in the experimental
parameters, set the sampling rate, number of cycles
and current autoranging. The software automatically
configures itself to the number of potentiostat
channels installed in the PG580RM unit.
A standard graphics display is provided for each
technique and we have added the ability for the user
to define their preferred format for each technique
from a simple template. A right-mouse click on the
plot gives access to the graph properties. From here
you can choose from a selection of line sizes, colours
and styles and overlay multiple data files.
Advanced waveform generation
The PG580RM modules are capable of generating
complex and repetitive waveforms with precision timing.
The instrument has a sequenced waveform generator
which generates waveforms based on a sequence of
steps. Each step may comprise a waveform which
includes pulses, linear sweeps and arbitrary waves.
The waveform generator has a timing resolution of
125 microseconds and will seamlessly sequence
from one step to the next. Other events such as Cell
On/Off and WE number can also be programmed
into a sequence. The sequencing supports loops and
advanced functionality such as analogue triggering. The
sequencing is used to create the standard experiments
in the UiEChem TM or UiECorr TM software packages and
both these applications support macro programming
for unique experiments. The sequencing facilities may
also be used in your own programming language via the
optional ActiveX ® control.
A configurable autosequencing routine provides an easy
solution to starting and stopping long term experiments.
Extended monitoring of the corrosion state of metals by
LPR or sensors by chronoamperometry is now a ‘handsoff’
operation.
3

Specifications
General
Slots taken
2 minimum in base unit
Cell connections
2 or 3 and earth
Floating measurements
Yes with isolation option
Maximum ADC sample rate
100 kHz
Maximum time record
Unlimited*
Scan rate
1 µV/s to 10 V/s
Minimum pulse duration 125 µs
*Subject to max 131k data points.
Counter Electrode
Voltage polarisation range
Current polarisation range
Maximum compliance
Rise time
± 2 V with factory option to
± 8 V
±20 mA
±8 V
1 V/µsec into 1 kΩ
Reference Inputs
Connections
Differential Electrometer
Maximum voltage measurement
± 2 V with factory option to
± 8 V
Maximum resolution 61 µV
Input impedance
10 11 Ω II 5pF
Input bias current