10-36
measure the redox potentials of species that react rapidly when electrolyzed. A
typical current response for
SHACV/P
is shown in Figure 10-22.
Figure 10-22.
Second harmonic A.C. current response for
SHACV/P
.
General Parameters for ACV/P, PSACV/P, SHACV/P
Initial E (mV) = 0 -3276 to 3276
Final E (mV) = 0 -3276 to 3276
Sensitivity = 1
µ
A/V 100 mA/V to 100 nA/V (10 pA/V with the
Low Current Module)
Specific Parameters for ACV/P, PSACV/P, SHACV/P
Scan Rate (mV/sec) = 4 1 to 200
A.C. Amplitude (mV) = 25 1 to 250
A.C. Frequency (Hz) = 50 5 to 250
Drop Time (msec) = 1500 500 to 8000
Quiet Time (sec) = 2 (0) 0 to 65535
Specific Parameters for PSACV/P, SHACV/P
Phase Shift (degree) = 0,110 0 to 360
Comments
a)
Drop Time
is used for
ACP
,
PSACP
and
SHACP
. The range of values
allowed for the
Drop Time
depends on the
A.C. Frequency
. The analogous
parameter for
ACV
,
PSACV
and
SHACV
is the
Step Period
, which is
controlled by the
A.C. Frequency
(default value is 1500 msec).
b) Parameters values in parentheses refer to
ACP
,
PSACP
and
SHACP
.
c) The
Phase Shift
is the phase angle relative to the applied A.C. potential used
for lock-in detection of the A.C. current. The
Phase Shift
resolution is 2, 5,
or 10 degrees (the lower the
A.C. Frequency
, the better the resolution).
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