Metrohm 796 Titroprocessor - Manual (Page 200)

8.11 Dosing commands
796 Titroprocessor, Instructions for use 194 194
ADD_R
Adding a relative volume
The ADD_R command allows a calculated volume of auxiliary reagent to be
added at any time during a method run. The volume is calculated from the
sample weight with the aid of a factor.
Command Parameters Parameters
ДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД
ADD_R Reagent Dos. drive A1
concentr. Dos. rate max mL/min
Factor 0.0 Fill. rate max mL/min
The parameters of the ADD_R command largely corre-
spond to those of the ADD_A command. Only a calcula-
tion factor is entered instead of the absolute volume.
Factor
Calculation factor
-99999.0…0.0…99999.0
The effective value of the relative reagent volume is cal-
culated from:
Volume in mL = Sample size
∗∗ factor .
The maximum reagent volume which can be added is
1000 mL. If a larger value is obtained from the calculation
then the reagent volume will be automatically reduced to
1000 mL.
The other parameters correspond to those of the ADD_A command, see
page 192.
PREP
Preparing a buret unit
The preparation, i.e. the rinsing of a buret unit cannot only be carried out
manually, but can also be programmed in a method, preferably in a start
sequence (OMOVE) which is carried out once. The necessary rinsing volume
is calculated from the dimensions of the dosing and filling tubing of the ex-
change unit or dosing unit used.
Command Parameters Parameters
ДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД
PREP Tubing Default Dos. drive A1
Tubing
Name of type of buret unit
8 characters
The type of buret unit defines the tubing parameters and
other settings which are necessary for the correct prepa-
ration of the buret unit. The definition of the various types
is carried out in the configuration under 'Tubings'. The
entry field contains a selection list with the different types
of dosing drive.