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Metrohm 726 Titroprocessor User Manual

Page 168

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8.6 KFT

726 Titroprocessor, Instructions for use

162

162

sible to record the temperature throughout a titration and to

output it as a temperature curve.

numerical

manual input

auto

automatic measurement during the
whole titration (for temperature curve)

initial

one-off measurement at the start of the
titration mode

The temperature can be included in formulas for calcula-

tions (see page 118ff), e.g. for volume corrections. The dif-

ferent system variables are listed on page 148 and 128.

Please note: Start temperature ST and closing tempera-

ture CT are only available with auto.

Time recording

Recording the measurement time

on | off

For recording the titration curve on the time axis the time

recording function must be switched on. If the titration

curve is drawn on the volume axis time recording can be

switched off. This permits smaller determination files as

fewer measurements are made and stored.

Derivation

Recording the first derivative of the titration curve

on | off

If the derivative of the titration curve is to be shown then

derivation recording must be switched on.

U(pol)

Polarization voltage (with KFT_UPOL*)

-1270…400…1270 mV

The polarization voltage is the voltage which is applied to a

polarized electrode during amperometric titration. The re-

sultant measuring quantity is µA.

I(pol)

Polarization current (with KFT_IPOL*)

-127…50…127 µA

The polarization current is the current which is applied to a

polarized electrode during voltametric titration. The resul-

tant measuring quantity is mV.

Stop conditions

The stop conditions define when and how a titration is to be concluded.

Reaching one of the possible stop criteria causes the titration to be con-

cluded. Combinations of stop conditions are possible and may even be ad-

vantageous.