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Metrohm 726 Titroprocessor User Manual

Page 156

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8.4 SET

726 Titroprocessor, Instructions for use

150

150

The [Custom adjust] softkey opens a further dialog
window in which user-defined settings can be carried out

(see page 151f).

Mpt. interval

Interval between measurement recordings

1…9999 s | off

A measurement point interval must be entered for showing

curves and display of the live value of a SET titration. The

measurement data will always be entered in the measuring

point list at these intervals. At the same time the presenta-

tion of the curve and the calculation of the live value are

updated. If the measuring point interval is switched off no

measuring point list will be drawn up.

Temperature

Temperature setting or measuring mode

-170…25.0…500°C | auto | initial

The temperature can be automatically determined during a

titration with the aid of a Pt100/Pt1000 sensor or a com-

bined electrode with built-in temperature sensor and can be

used for automatic pH correction (if pH is being measured).

It is possible to record the temperature throughout a titra-

tion and to output it as a temperature curve.

numerical

manual input (e.g. for pH correction)

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.