Metrohm 796 Titroprocessor - Manual (Page 142)

8.2 DET
796 Titroprocessor, Instructions for use 136 136
It is preferable to select a relative stop volume when the
primary objective is to limit the consumption of reagent.
Fill. rate
Buret fill rate
0.01 mL/min…150 mL/min | max.
The buret is automatically filled when the titration ends. The
maximum fill rate will depend on the size of the buret cylin-
der used.
Buret cylinder max. fill rate
1 mL 3 mL/min
2 mL 6 mL/min
5 mL 15 mL/min
10 mL 30 mL/min
20 mL 60 mL/min
50 mL 150 mL/min
A value up to 150 mL/min can be entered even for small
buret cylinders. When the method is executed, however,
the dosing rate will automatically be reduced to the largest
possible value. Select '
max' whenever possible, except with
viscous reagent solutions which could cause underpres-
sure in the cylinder if the filling rate is too fast (formation of
bubbles!).
Meas.val
Measured value as a discontinuation criteria
with DET_PH: pH -20 … 20 | off
with DET_U, DET_IPOL: -2000 … 2000 mV | off
with DET_UPOL: -200 … 200 µA | off
The measured value at which the titration is discontinued.
EP#
Number of equivalence points
0…9 | off
The titration is discontinued as soon as the pre-set number
of equivalence points is recognized. In principle, only 9
equivalence points can be evaluated. In the setting
'EP# 0' the titration is discontinued after the start condi-
tions are executed (initial dosing). 'off' means, the num-
ber of equivalence points found is not taken into account
for the discontinuation of a titration.
Stop time
Absolute titration duration
1…9999 s | off
The titration is discontinued on expiry of the pre-set stop
time.