eDAQ Picostat, User Manual

Page: 82 / 122

78 eDAQ Potentiostats
The current values used should ensure that the resulting potentials do
not exceed ±10 V (the maximum limit of the Potentiostat) — highly
resistive loads can easily produce large potentials, even with small
currents.
Remember that when setting zero, or very small, currents there is
always a small amount of offset (error) in the system. If you are trying to
measure the potential of a system under zero current conditions then it
would generally be more accurate to use a zero current potentiometer
(or pH meter) than a galvanostat, or use the Potentiostat in High Z
mode,
page 16 .
Select the expected range
for the potential signal
Potential signal is displayed
when in Galvanostat mode
Select
galvanostat
operation
Select
Potentiostat in
the Channel
menu
Set applied current
Use these values to set
Units Conversion for
the Current channel
Access Current channel units
conversion dialog,
Figure 5–18
Figure 5–17
Setting up the
Potentiostat as a
Galvanostat (Windows).
Figure 5–18
The Current channel units
conversion dialog box.