Metrohm 726 Titroprocessor - Manual (Page 176)

8.7 KFC
726 Titroprocessor, Instructions for use 170 170
A value up to 150 mL/min can also be entered for smaller
buret cylinders; however, when the method is carried out
the dosing speed will automatically be reduced to the larg-
est possible value. For KF reagents (viscous liquids) no
filling rate greater than 30 mL/min should be selected as
otherwise too rapid filling may cause a partial vacuum in
the cylinder (bubble formation!).
Temperature
Temperature setting or measuring mode
-170…25.0…500°C | auto | initial
The temperature can be automatically determined during a
titration with the aid of a Pt100/Pt1000 sensor or a com-
bined electrode with built-in temperature sensor. It is pos-
sible to record the temperature throughout a titration and to
output it as a temperature curve.
numerical manual input
auto automatic measurement during the
whole titration (for temperature curve)
initial one-off measurement at the start of the
titration mode
The temperature can be included in formulas for calcula-
tions (see page 118ff), e.g. for volume corrections. The dif-
ferent system variables are listed on page 148 and 128.
Please note: Start temperature ST and closing tempera-
ture CT are only available with auto.
U(pol)
Polarization voltage (with KFC_UPOL*)
-1270…400…1270 mV
The polarization voltage is the voltage which is applied to a
polarized electrode during amperometric titration. The re-
sultant measuring quantity is I
pol
/µA.
I(pol)
Polarization current (with KFC_IPOL*)
-127…25…127 µA
The polarization current is the current which is applied to a
polarized electrode during voltametric titration. The resul-
tant measuring quantity is U
pol
/mV.