Model 1280C Potentiostat/Galvanostat with built-in FRA
The mode 1287 Electrochemical Interface is a high accuracy, wide
bandwidth potentiostat/galvanostat which offers a full range of
AC/DC test capabilities; when coupled with one of our frequency
response analyzers it delivers outstanding AC impedance
capabilities.
Measurement Integrity
Central to the measurement capability of the 1287 are two high
resolution digital voltmeters which provide simultaneous voltage and
current measurements. Using Solartron Analytical’s patented pulse
width conversion technique, they have high accuracy, stability and
linearity throughout the entire range of the instrument. The 1287
has excellent measurement resolution and accuracy down to 1 µV
for the reference electrodes and 1pA for the working electrode,
which makes it an ideal choice for electrochemical noise
applications or measurements where signal levels are extremely low.
The 1287 uses floating measurements on all connections: it is
equally at home measuring corrosion rates on grounded oil pipelines
as it is in the laboratory. For safety reasons, it is often
necessary to ground laboratory equipment such as autoclaves, a major
problem if the instrument is not capable of floating measurements.
The 1287 offers complete flexibility for cell connection: 2-, 3- or
4-terminal measurements can be made with equal ease.
- 2-terminal techniques for general materials/electrochemical
testing
- 3-terminal techniques for corrosion/coating applications
- 4-terminal techniques for accurate characterization of
batteries/fuel cells, enabling lead resistance and impedance
effects to be minimized
Impedance
Electrochemical Impedance Spectroscopy (EIS) is widely used to
enhance the information about reaction mechanisms available from DC
techniques. Designed with impedance testing very much in mind,
the1287’s performance is unsurpassed; no other electrochemical
interface matches the flatness and linearity of its frequency
response. Solartron Analytical FRAs use a single sine correlation
algorithm which offers excellent noise and harmonic rejection. The
technique is particularly powerful for electrochemical applications
since signal levels are usually very low (of the order of
millivolts), and are inevitably buried in noise. With the1287/1260
combination it is possible to characterize cells with a very wide
range of impedances. When making high frequency impedance
measurements, Solartron Analytical’s driven shield technology
minimizes the unwanted effects of cable impedance enabling the 1287
to be used over a full 10 µHz to 1 MHz frequency range.
The 1287 was designed to carry out both DC tests and AC impedance
tests: an externally generated waveform from a frequency response
analyzer or spectrum analyzer can be added to the polarization
signal.
Electrochemistry Software
CorrWare and ZPlot packages are specifically designed to run a
wide range of electrochemical tests including:
- Impedance
- Potentiostatic/galvanostatic techniques
- Cyclic voltammetry
- Electrochemical noise
CorrWare and ZPlot are an ideal tools for corrosion analysis,
battery/fuel cell research, and general electrochemistry. The
software provides, real-time analysis, multiple display formats and
curve fitting routines.
Impedance Contour Plot
Specifications
| Measurement
Configurations |
|
Cell connections |
2-, 3- or 4-terminal, all
floating |
|
Working electrode current
measurement resistor (Rs) range: |
0.1 Ω to 1 MΩ |
|
|
Full scale current ranges |
2 A to 200 nA |
|
|
Limit of error: |
0.1% ±0.05% of range |
|
|
Counter electrode output voltage,
wrt LO: |
>±30 V |
|
|
current, subject to thermal
protection limits: |
2 A |
|
|
Slew rate, potentiostatic control: |
>10 V/µs |
|
| Reference Electrodes |
|
Input impedance: |
>10 GΩ |
|
|
Input capacitance: |
50 pF |
|
|
Input current: |
<1 nA |
|
|
Limit of error: |
0.1%±100 µV |
|
|
Rejection: |
f<10 kHz: 75dB, f<1 MHz:
40 dB |
|
| DC Polarization Voltage |
|
Range |
±14.5 V |
|
|
Limits of error: |
V<3.2 V: 0.2%±200 µV
V>3.2 V: 0.2%±2 mV |
|
|
Max. resolution: |
100 µV |
|
|
Current range: |
±2 A |
|
|
Limit of error: |
0.2% ±0.1% of range |
|
|
Max. resolution: |
100 pA |
|
| DC Sweep Capability |
|
Type |
analog ramp ramp rate (voltage):
6 mV/min to 6000 V/min |
|
|
Segment duration: |
10 ms to 105 s |
|
|
Stepped ramp step height: |
5 µV/5 pA to 29 V/4A |
|
|
Step duration: |
10 ms to 105 s |
|
| AC Input Capability |
|
AC input voltage range: |
±10 V, gain: x1. x0.01, impedance:
10 kΩ |
|
|
Control loop Bandwidth: |
100 Ω resistive load, unity gain |
|
|
|
potentistatic mode, type C stability:
>1 MHz |
|
|
|
galvanostatic mode, type B stability:
>100 kHz |
|
| Digital meters |
|
Resolution |
3½, 4½, 5½ digits |
|
|
Maximum resolution |
1 µV/1 pA |
|
| Bias Rejection |
|
Voltage |
|
|
|
Range: |
±14.5 V |
|
|
Limit of error: |
0.2%±10 mV |
|
| |
Resolution: |
5 mV |
|
|
Current |
|
|
|
Ranges (full scale): |
200 nA to 2 A |
|
|
Limit of error: |
0.2%±1% of range |
|
|
Resolution: |
1% of range |
|
| Interfaces |
|
|
RS232 & GPIB (IEEE-488) |
For instrument control or for
directly driving attached plotter using HPGL language |
| Power Requirements |
|
|
Voltage |
90 to 110V, 108 to 132V, 198 to
242V, 216 to 264VAC |
|
Frequency |
48 to 65 Hz |
|
Power |
< 150 VA |
| Dimensions |
|
|
Width |
432 mm (17") |
|
Depth |
472 mm (18.5 ") |
|
Height |
108 mm (4.25") |
| Weight |
11 kg (24 lbs) |
| Operating
Temperature Range |
0 to 50ºC (32 to 122ºF) |
|
Advanced Measurement Technology
is
a trademark of AMETEK, Inc.