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Metrohm 797 VA Computrace User Manual

Page 194

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6 Electroplating Bath VA

797 VA Computrace – Software

182

Pretreatment

(see

Pretreatment with CVS and CPVS

, section 6.3)

Cleaning potential (V) [ -5...+5 V ; 1.625 V ] [ read only ]

Voltage applied to the electrodes during the

Cleaning time

.

Cleaning time (s) [ 0...80600 s ; 0 s ] [ read only ]

Time during which the

Cleaning potential

is ap-

plied to the electrodes.

Equilibration potential (V) [ -5...+5 V ; 1.625 V ]

(This pa-

rameter is with CPVS part of the sweep)

Voltage applied to the electrodes during the

Equilibration time

.

Equilibration time (s) [ 0...80600 s ; 5 s ]

(This parameter is

with CPVS part of the sweep)

Waiting time before starting the sweep; with

Equilibration potential

applied to the electrodes. If

the checkbox

Hydrodynamic (measurement)

is not

checked, the stirrer is switched off during that
time.

Sweep [ read only ]

The sweep parameters depend on the mode (see
CVS - Cyclic Voltammetric Stripping section 3.2,
and CPVS - Cyclic Pulse Voltammetric Stripping
section 3.2)

Substances tab with Calibration

technique “RC Sample with

response curve”

The

Substances

tab of the

EDIT WORKING METHOD PARAMETERS

window contains parameters for the definition and recognition of
substances, for the definition of standard solutions, for peak evalu-
ation and results calculation. The parameters displayed depend on
the

Calibration

technique selected in the

WORKING METHOD SPECI-

FICATIONS

window. With “RC Sample with response curve” follow-

ing parameters have to be defined:

Substance [ 24 characters ; ]

Substance name. For the assignment of a found
peak to this substance the checkbox on the left
side of the substance name must be checked.

With CVS:

Peak pos. +/- (V) [ -5...+5 V ; 0 V ]

Position of the peak voltage for the substance and
tolerance for this verification voltage.

With CPVS:

Step potential [ read only ; step 1: 0.2 V ]

Displays the potential values, which are defined in
the window

edit stripping steps

.

Bsln

.

Parameters for baseline evaluation (details see

Baseline

, section 5.2). Click the

button to open

the

BASELINE

window for the selected substance.