Metrohm 797 VA Computrace - Manual (Page 180)

6 Electroplating Bath VA
797 VA Computrace – Software
168
Chloride potential [ -5...5 ; 1.475 V ]
With CVS: If it is activated, the current is readout
for the defined potential during the last sweep (in
anodic direction) of the bath determination.
With CPVS: One of the defined stripping steps
(Voltammetric tab with Calibration technique
"MLAT") can be selected. If it is activated, the cur-
rent is readout for the selected potential during
the last sweep (in anodic direction) of the bath de-
termination.
The Chloride potential correlates with the concen-
tration of chloride in the electroplating bath.
Regression technique [ Linear Regression ]
The regression is calculated with a straight line.
Peak evaluation [ Height, Area, Derivative, Coulometric ; Coulomet-
ric ]
Selection of peak evaluation quantity:
Height
Peak height from baseline to peak maximum.
Area
Peak area between peak curve and calculated ba-
seline.
Derivative
Difference between positive an negative maximum
of the first derivative of the voltammogram.
Coulometric
Charge transmitted during the peak.
Smooth factor [ 1...6 ; 4 ]
Smoothing power of the Savitzky/Golay smooth-
ing of the baseline (1 = minimum smoothing, 6 =
maximum smoothing) (s
ee Smoothing and differ-
entiation , section 5.8 ).
Eliminate spikes
Eliminates spikes to smooth the signal.
Reverse sweep [ on, off ; off ]
Enable peak evaluation of the reverse sweep of
cyclic sweeps (not available with CPVS).
DT Suppressors with calibration curve
“DT Suppressors with calibration curve” is a dilution titration cali-
bration technique for CVS and CPVS. It is mainly used to analyze
Suppressors in electroplating baths.
Choose the calibration curve in the field
Calibration curve of the De-
termination tab (use “DT Record calibration curve” to record the
corresponding calibration curve). The parameters of the Voltam-
metric tab are automatically set to the values used while recording
the calibration curve.