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Metrohm 726 Titroprocessor User Manual

Page 142

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8.2 DET

726 Titroprocessor, Instructions for use

136

136

Mpt. overflow

Discontinuation: full measuring point list

on | off

If 'on' is selected, titration is discontinued when the meas-
uring point list is full (1000 measuring points).

At 'off', titration continues after 1000 measuring points, but
no further measuring points are recorded.

8.2.2 User adjustments

User adjustments allow fine adjustment of the pre-set titration parameters.

Starting from one of the sets of parameters (slow, medium, fast) go to 'Ad-
justment

' in the method editor and press the [Custom adjust] softkey

to change the individual parameters in the ‘Custom adjustments’ dialogue

window.

ЪДДД

DET_PH* Custom adjustments

ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿

³ ³

³ Meas.pt.density 4 Signal drift 50 mV/min ³

³ Min.increment 10 æL Equilibr.time auto s ³

³ Titr. rate max mL/min ³

³ ³

АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД QUIT ÄÙ

Meas.pt.density

Meas. pt. density

0…4…9

The measuring point density is a measure of how often

the measuring points are determined during the titration.

This parameter has a direct impact on the size of the

variable volume steps. A small measuring point density

value results in small volume steps, i.e. lots of individual

measuring points. A large value results in big volume

steps, i.e. fewer measuring points.

Min.increment

Minimum volume increment

0,1…10…999,99 µL

To avoid excessively small volume steps with dynami-

cally controlled titrations (and hence "endless" waits),

the minimum volume increment can be pre-set. Caution

should be exercised when changing this parameter, as

excessively large volume steps can adversely affect the

accuracy of the results.

Titr. rate

Titration rate

0,01…150 mL/Min | max

The titration rate has a direct impact on the dosing rate of

the volume increments. The maximum value depends on

the buret cylinder size.