Metrohm 726 Titroprocessor - Manual (Page 139)

88. . Command Reference Command Reference
726 Titroprocessor, Instructions for use 133 133
Titration conditions
These are the actual titration parameters that control the dosing procedure
and recording of measured values during the titration.
Adjustment
Pre-defined sets of parameters
slow | medium | fast
To facilitate setting the titration parameters, there is a
choice of three different sets of parameters. These sets
comprise a number of tried-and-tested settings which will
suffice for the vast majority of requirements.
slow for ultra-precise titrations or for chemically
inhibited reactions requiring a long time
medium standard parameter for non-problematical
titrations, optimized for the most common
applications
fast fastest pre-set parameter for non-critical
titrations
If the titration parameters need to be modified to specific ti-
tration problems, the various pre-set parameters can be
adjusted on an individual basis.
The softkey [Custom adjust] opens another dialogue
window in which user-defined settings can be entered (see
p. 136f).
Temperature
Setting the temperature or its measuring mode
-170…25.0…500°C | auto | initial
The temperature during a titration can be determined
automatically using a Pt100/Pt1000 sensor or a combined
electrode with integral temperature sensor and can (with
measuring quantity pH) be used to correct the pH auto-
matically. The temperature during a titration can be re-
corded and printed out as a temperature curve.
numerical Manual input (e. g. to correct the pH)
auto Automatic measurement throughout the
entire titration (for temperature curve)
initial Single measurement at the beginning
of the titration mode
The temperature can be integrated in formulas for calcula-
tions (see p. 128), e. g. for volume corrections. The follow-
ing system variables are generated:
IT Initial temperature at start of mode
ST Start temperature before first dosing
(auto only)
CT End temperature at last dosing
(auto only)