Metrohm 719 S Titrino - Manual (Page 30)

2.7. Parameters, key <PARAM>
719 S Titrino
26
max.rate 10.0 ml/min
**titr.
min.rate 25.0 µl/min
**titr.
stop crit: drift
**titr.
stop drift 20 µl/min
**titr.
t(delay) 10 s
**titr.
stop time OFF s
**titr.
Maximum dosing rate (0.01...150 mL/min, max.)
<CLEAR> sets "max.".
This parameter determines primarily the addition rate
outside the control range, see also page 31.
The maximum rate depends on the Exchange Unit:
Exchange Unit max.
5 mL 15 mL/min
10 mL 30 mL/min
20 mL 60 mL/min
50 mL 150 mL/min
Minimum dosing rate (0.01...999.9 µL/min)
This parameter determines the addition rate right at the
start and the end of the titration, see also page 42.
This parameter influences the titration speed and
therefore its accuracy very strongly: A smaller min.rate
results in a slower titration.
Type of stop criteria (drift, time)
Titration stops if EP is and stop drift is reached. (1...999
µL/min)
Titration stops if there is no dosing during t(delay).
(0...999 s, INF)
<CLEAR> sets "INF"
Switch off when the end point is reached and the set
time after the last dispensing has elapsed.
If "INF" is set, an inquiry regarding the stop time
appears.
If t(delay) is "INF"
Stop after a time (0...999999 s, OFF)
<CLEAR> sets "OFF".
Stop after the set time after the start of the titration.
"OFF" means no stop, i.e. titration for an "infinitely" long
time.
>titration parameters
titr.direction: auto
pause 1 0 s
**titr.
General titration parameters
Direction is set automatically (+, -, auto)
auto: The direction is set automatically by the Titrino
(sign [U
first
- EP]).
+: Direction of higher pH, higher voltage (more
"positive"), larger currents.
- : Direction of lower pH, lower voltage, smaller
currents.
The titration direction is fixed if two EP's are set. In this
case, an input for titration direction has no meaning.
Pause 1 (0...999999 s)
Waiting time, e.g. for the equilibration of the electrode
after the start. The waiting time can be aborted with
<QUIT>.