4 re-evaluation – Metrohm 796 Titroprocessor User Manual

Page 231

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10. Curves and re-evaluation

796 Titroprocessor, Instructions for use

225

225

Grid

Titration curve grid

on | off

The titration curve grid is only shown on the titration
curve printout. It cannot be shown on the screen.

An alteration to the representation parameters has a direct effect on the
presentation of the curve.
The curve can be printed out in the new presentation by pressing the,
<PRINT SCREEN> key or reproducing a complete curve report. By
pressing the

<PRINT>key the printer dialog window opens. After the

required mode has been selected with the cursor keys the [Select
report]

softkey allows the selection of the possible reports. Select either

V_Curve

(volume curve) or T_Curve (time curve) and then the quantity to

be shown.

10.4 Re-evaluation

For a re-evaluation (only for

DET and MET modes) all settings which have

an effect on the recognition of the equivalence point can be altered by
pressing the softkeys [* Param] and [EP Recogn.].

ЪДДД

EP Recognition

ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿

³ ³

³ Equivalence points window min. EPC 5.0 ³

³ Gen. lower limit pH min upp. pH max ³

³ pK/HNP Evaluation off ³

³ ³

³ Windows Fixendpoints ³

³ EP# from ... to [pH] EPC [] F# M.value [pH] ³

³ ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДД ³

³ 1 min max 5.0 1 off ³

³ 2 off off 5.0 2 off ³

³ 3 off off 5.0 3 off ³

³ 4 off off 5.0 4 off ³

³ 5 off off 5.0 5 off ³

³ 6 off off 5.0 6 off ³

³ 7 off off 5.0 7 off ³

³ 8 off off 5.0 8 off ³

³ 9 off off 5.0 9 off ³

АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД QUIT ÄÙ

Details of the individual settings can be found on page 139ff.

Alterations of the evaluation parameters have no direct effect on the
presentation of the curve . This requires the complete recalculation of the
measuring data. This is done by changing to the results page. Press the
[Results]

softkey on the main page, change to the second softkey bar

and press [Recalc]. This brings all result calculations up to date and
shows the recalculated results.

The determination files with the newly calculated results and the altered
settings can be stored in a new determination file in a selectable memory
area by pressing the [File] softkey on the results page to call up the file
dialog window.

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