Potentiostat / Galvanostat

Potentiostat / Galvanostat
Potentiostat / Galvanostat
EC301 — ±30 V compliance voltage, ±1 A maximum current
EC301 Potentiostat / Galvanostat
· ±30 V compliance voltage
· ±1 A current
· Up to ±20 A power booster (opt.)
· ±15 V polarization range
· Built-in EIS
· Full-featured software included
· Ethernet and GPIB interfaces
The EC301 gives electrochemists the opportunity to equip their
labs with high compliance, research-grade instrumentation at
a very attractive price. Stand-alone front-panel operation
allows easy use in the field or in handling routine electrode
preparation. The free Windows software (SRSLab) has
routines for all major electrochemical experiments and can
be downloaded from the SRS web site. The EC301 has an
open command set which allows scientists to write their own
unique waveforms and even write custom software.
Front-Panel Operation
The intuitive front panel of the EC301 allows you to quickly
and easily set up several scan types (CV, LSV, steps and
holds). Unlike many competitive models, the EC301 is a
stand-alone instrument – you don’t need to use a computer.
The array of indicator LEDs make it easy to know the state of
the instrument at a glance.
Software Included
· EC301 ... $7990 (U.S. list)
Stanford Research Systems The SRSLab software supports all the major electrochemical
techniques including voltammetry, pulsed waveforms, step
techniques, and Electrochemical Impedance Spectroscopy
(EIS). You can even design your own custom measurements.
Data is acquired over the TCP/IP interface or via IEEE-488
(GPIB). The software lets you easily configure sequences of
experiments and shows you the data as they are generated.
The data is easily exported to spreadsheets and graphing
packages.
phone: (408)744-9040
www.thinkSRS.com
EC301 Potentiostat / Galvanostat
Designed for EIS
Built-in Temperature Measurement
The EC301 was designed with electrochemical impedance
spectroscopy (EIS) in mind. Instead of employing driven
shields, we bring the measurement close to the cell via a
remote preamplifier. This means higher accuracy and less
susceptibility to parasitic effects. Shunt resistor current
measurements in all ranges enhance control loop stability,
enabling EIS at high frequencies. The EC301 performs
stand-alone EIS measurements up to 100 kHz. An external
frequency response analyzer (FRA) can be used to measure
EIS at frequencies up to 1 MHz using analog connections.
Compliance Limiting
Quite often, electrochemists are working with sensitive
cells which would be destroyed if the full compliance of
a potentiostat were brought to bear. Bubbles in a flow cell
system can easily cause potentiostats to lose voltage control
by blocking feedback to the instrument from the reference
electrode. Without compliance limiting, a carefully prepared
electrode will be ruined. With this feature, the user can simply
select the maximum potential the counter electrode will be
allowed to apply. When the limit is reached, it is clamped
to the preset level. Compliance limiting guarantees safe
operation even if control is lost.
Temperature is a critical parameter in many battery, fuel cell
and corrosion experiments, but it is often not recorded. Not
knowing the temperature at which the data were acquired
can make it difficult to compare your results. With a built-in
input for a 100 Ω platinum RTD, the EC301 makes it easy
to acquire and plot temperature right along with the rest of
your data.
Open Command Set
While our software supports all major electrochemical
techniques, we realize that electrochemistry isn’t static.
When a new technique or procedure is developed, the open
command set lets experimentalists write customized software
to support it. You can write in LabVIEW, MATLAB, or any
other language.
Optional Power Boosters
SRS offers a ±5 A (O100BST), ±10 A (O200BST) or ±20 A
power booster for applications requiring higher current. All
three are affordably priced.
Floating Working Electrode
In normal operation, the working electrode current return path
is tied to chassis ground. However, there are times in which
electrochemists wish to experiment with working electrodes
that are intrinsically grounded (e.g., water pipes, rebar in
concrete, an autoclave). Once the shorting bar from the rear
panel of the instrument is removed, the ground return path
floats, allowing these experiments.
Fast Cyclic Voltammetry
The EC301 supports scan rates up to 10 kV/s. Potential,
current and an auxiliary signal are all acquired simultaneously
at 250,000 samples per second. Furthermore, an AC line
detection circuit allows synchronization of repetitive scans
with the power line cycle.
EC301 front panel
EIS of two time constant load
Ordering Information
EC30130 V / 1 A potentiostat / galvanostat$7,990
O100BST
±5 A power booster
$950
O200BST
±10 A power booster$1,950
O400BST
±20 A power booster$2,950
QCM200
Quartz Crystal Microbalance
$2,995
O100CAB Replacement terminal cables
$150
O100RTD
RTD for EC301
$250
EC301 rear panel
Stanford Research Systems phone: (408)744-9040
www.thinkSRS.com
EC301 Specifications
Power Amplifier (CE)
Compliance voltage Maximum current Bandwidth Slew rate CE limit Set range Bandwidth Bandwidth limit Current Measurement
±30 V
±1 A
>1 MHz (10 kΩ load, <100 µA)
≥10 V/µs
Limits counter electrode voltage when enabled
±500 mV to ±30 V
1 MHz
10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, 1 MHz cutoff frequencies
Differential Electrometer (EC19 Module)
Input range Input impedance Input bias current Bandwidth CMRR ±15 V
>1 TΩ in parallel with 20 pF
<20 pA
>10 MHz
>80 dB (<10 kHz)
Potentiostat Mode
Applied voltage range Resolution
Accuracy Automatic scan rate Noise and ripple ±15 V
500 µV (200 µV performing an
automatic scan)
±0.2 % of setting ±5 mV
0.1 mV/s to 10 kV/s
<20 µVrms (1 Hz to 10 kHz)
Range Resolution Accuracy
1 A range All other current Acquisition rate Voltage output Accuracy Output impedance Max. output current Filters Bias rejection Current output Accuracy
(1A range)
Accuracy (all other ranges)
Max. output current Filters Bias rejection Power Booster (opt.)
EIS
±5 A, ±10 A or ±20 A
±20 V
ZRA Mode
Voltage offset
CESense and WE electrodes held within ±5 mV of each other
Voltage Measurement
Range Resolution
±15 V range
±5 V range
±2 V range
Accuracy Acquisition rate ±15 V
0.4 mV
0.1 mV
0.06 mV
±0.2 % of reading ±5 mV
4 µs (250 kS/s)
Stanford Research Systems ±15 V output
±0.2 % of VRE – VWE Sense
±5 mV
50 Ω
10 mA
No filtering or 10 Hz low-pass
±15 V (full range)
±2 V
IWE within ±0.5 % of (VBNC × IRange) ±0.2 % × IRange
IWE within ±0.2 % of (VBNC × IRange) ±0.2 % × IRange
10 mA
No filtering or 10 Hz low-pass
±2 V (full range)
IR Compensation
Applied current ranges ±1 nA to ±1 A in decades
Setpoint resolution 0.001 x full scale current
Accuracy
1 A range ±0.5 % of reading ±0.2 % of range
All other I-ranges ±0.2 % of reading ±0.2 % of range
Automatic scan rate 1 pA/s to 2 A/s
Maximum current Compliance voltage ±0.5 % of reading ±0.2 % of range
±0.2 % of reading ±0.2 % of range
4 µs (250 kS/s)
Voltage and Current Analog Outputs
Positive feedback
Range Resolution Current interrupt
Switching time Interrupt duration Interrupt frequency Galvanostat Mode
±1 nA to ±1 A in decades
0.01 % of full scale current
Mode 3 Ω to 3 GΩ
(depends on current range)
1 mΩ (1 A range) to
100 kΩ (1 nA range)
<5 µs (1 kΩ resistive load)
100 µs to 1 s
0.1 Hz to 300 Hz
Potentiostatic / Galvanostatic
Sine Wave Generator (open control loop)
Frequency range 10 µHz to 100 kHz
Frequency setability
1 µHz
Sweep Linear or logarithmic
Amplitude, p’stat 10 mVpp to 15 Vpp
Amplitude, g’stat
1% of full scale current to 2x full (1A range)
scale current
Amplitude resolution 1 mV (potentiostatic) or 0.1% of
full scale current (galvanostatic)
Potentiostatic DC offset±14.9 V
(| offset + amplitude | <15V)
Impedance Analyzer
Frequency10 µHz to 100 kHz
phone: (408)744-9040
www.thinkSRS.com
EC301 Potentiostat / Galvanostat
Phase Accuracy
Amplitude Accuracy
2 degrees (typical, load and frequency dependent)
1% (typical, load and frequency dependent)
Temperature Measurement
Sensor Accuracy 100 Ω Pt RTD
±1 °C (–100 °C to +200 °C)
Rotating Electrode Output (front-panel BNC)
Range Accuracy 0 to 10 V settable analog output
±1 % of setting ±5 mV
External Input (front-panel BNC)
Input range Potentiostat mode Galvanostat mode Impedance Bandwidth ADD TO SCAN button
DIRECT CONTROL button
±15 V (potentiostat mode), ±2 V (galvanostat mode)
1 V input corresponds to an applied voltage of 1 V
1 V input corresponds to an applied voltage of 1 A
10 kΩ in parallel with 50 pF
>1 MHz
Adds the external input voltage to internally-generated scans
Takes the control voltage or current solely from the external input
SRSLab Software
Communication Operating system Measurements (DPV)
(QCM)
IEEE-488.2 & TCP/IP interfaces
Windows
Cyclic Voltammetry (CV)
Linear Sweep Voltammetry
Cyclic Staircase Voltammetry (Tast)
Square Wave Voltammetry
Differential Pulse Voltammetry
Differential Normal Pulse Voltammetry (DNPV)
Timed Hold
Quartz Crystal Microbalance
Electrochemical Impedance Spectroscopy (EIS)
Rear-Panel Inputs and Outputs
Timebase Raw E Raw I CE / 3 Sync ADC CI sync Scan trigger Program E/I ADC 1,2,3 10 MHz, 1 Vpp
±15 V output
±2 V output (1 V full scale)
±10 V, VCE/3 voltage output,
1 MHz bandwidth
±10 V analog input
TTL output for IR compensation
Digital input. Falling edge begins automatic scan
±15 V input (sum of internal and external voltage programs)
±10 V analog inputs (general purpose)
Differential normal pulse
General
Dimensions Weight Warranty 17" × 5.25" × 19.5" (WHL)
26 lbs.
One year parts and labor on defects in materials & workmanship
Stanford Research Systems phone: (408)744-9040
www.thinkSRS.com
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