Metrohm 797 VA Computrace Manual de usuario descargar pdf (Pagina 216)

7 Manual control

797 VA Computrace – Software

204

Purge time (s) [ 0...80600 s ; 300 s ]

Time of inert gas purging before the first measurement of the

sample solution.

Conditioning cycles

Electrochemical regeneration of the solid state electrode by a

freely selectable number of conditioning cycles. For every cy-

cle, the voltage is changed at a sweep rate of 1 V/s to the End

potential

and then decreased at the same rate back to the

Start potential.

Start potential (V) [ -5...+5 V ; -1.2 V ]

Start voltage for the cyclic conditioning sweep.

End potential (V) [ -5...+5 V ; -0.1 V ]

Final voltage for the cyclic conditioning sweep.

No. of cycles [ 0...X ; 0 ]

Number of conditioning cycles.

Cleaning potential (V) [ -5...+5 V ; -0.8 V ]

Voltage applied to the electrodes during the Cleaning time.

Cleaning time (s) [ 0...80600 s ; 10 s ]

Time during which the Cleaning potential is applied to the

electrodes.

Sweep

Parameters of DP sweep used at the end of the cleaning cyc-

les for checking the electrode (see VA measurement modes,

section 3.2).

No. of repetition cycles [ 0...X ; 5 ]

Number of repetition cycles for applying the conditioning cyc-

les and cleaning potential steps.

Cell off after measurement [ on, off ; on ]

Enable/disable the switching off of the voltage applied to the

electrodes after measurement.

Stand-by potential (V) [ -5...+5 V ; -0.1 V ]

Voltage to be applied to the electrodes after measurement if

the Cell off after measurement box is set to off.

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Metrohm 797 VA Computrace Manual de usuario Pagina 216