Battery-powered, handheld potentiostat and galvanostat
The PalmSens instrument is used for sensors or cells with two or three
electrodes. The wide dynamic range allows application of
micro- as well as macroelectrodes. The response time of the instrument is short enough to apply fast techniques as square wave
voltammetry. Its noise level is low enough to measure dc-currents with a resolution of a
picoamp.
The applicable techniques are:
- differential
pulse and square wave (stripping) voltammetry,
- normal pulse and ac
voltammetry,
- stripping
chronopotentiometry or PSA,
- amperometric and pulsed
amperometric detection,
- potentiometry,
- linear
sweep and cyclic voltammetry.
PalmSens is controlled by desktop PC or Pocket PC
The Pocket PC software provides easy control of
PalmSens. All relevant parameters can be edited.
The measured curves as well as the calibration
plots are graphically
displayed.The software allows determination by means of standard addition or using a calibration curve.
The instrument has connections for control of external equipment like valves or a
stirrer. PalmSens is expandable with an optional module. This provides
the possibility to modify the instrument for specific electrochemical sensors but also to develop a complete integrated analytical instrument with flow control
etc..
|
The most important
specifications of this portable potentiostat and
galvanostat are:
| - power
source |
2 NiMH
batteries for more than 8 hours operation |
| -
dimensions |
155 mm x
85 mm x 35 mm |
| - weight |
0.45 kg
with batteries |
| -
dc-potential range |
± 2 V |
| -
potential resolution |
1 mV |
| -
current ranges |
1 nA to
10 mA (8 ranges) |
| -
maximum current |
± 10 mA |
| -
current resolution |
0.1 % of
current range
1 pA on lowest current range |
| -
measurement rate |
> 40
kHz |
|
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