Metrohm 787 KF Titrino - Manual (Page 38)

2.8. Result calculations
787 KF Titrino
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Formula for the blank determination BLANK
factor ) KFR ( volume blank × =
If the blank is determined with an excessive solvent volume, the result can be
converted to the amount used subsequently with the aid of the factor.
If the drift correction is switched on, the "volume(KFR)" is corrected in all modes as
follows:
volume(KFR) – d = volume(KFR) – (drift value * (-d)time)
"(-d)time" corresponds to the time during which control is exerted (i.e. during the positive
extraction time and during the titration time, but not during the dispensing of the start
volume and during negative extraction times).
With manual drift correction, the entered drift value is reconciled in the result calculation,
whereas with automatic drift correction the drift value at the start of the titration is used.
The drift correction is used when the ingress of moisture during the titration needs to be
compensated. A drift correction is appropriate when the ratio
is large.
Key <UNIT>
The <UNIT> key can be used to select the unit of the
result in the KFT mode and of the sample size. It is
accessible during the conditioning and in the standby
state.
In the modes "TITER" and "BLANK", the result unit can
be viewed only but not changed.
The display texts of the Titrino are shown to the left.
The values are the default values.
result unit: %
result unit: %;2
smpl size unit: %
Unit of the result in the KFT mode (%, ppm, mg/mL, g,
mg, mL, mg/pc, no unit)
Number of decimal places (0...9)
The number of decimal places in the result output
follows the separator ";". The number flashes to draw
attention to the fact that this value can now be entered.
Unit for the sample size (g, mg, mL, µL, pc, no unit )
drift ∗ titration time
volume(KFR)
UNIT