Metrohm 719 S Titrino - Manual (Page 31)

2.7 Parameters, key <PARAM>
719 S Titrino
27
start V: OFF
cond.
start V 0.0 ml
cond.
factor 0
cond.
dos.rate max. ml/min
**titr.
pause 2 0 s
**titr.
extr.time 0 s
**titr.
meas.input: 1
I(pol) 1 µA
U(pol) 400 mV
electrode test: OFF
temperature 25.0 °C
cond.
Type of start volume (OFF, abs., rel.)
"OFF": start volume switched off
"abs.": absolute start volume in mL
"rel.": relative start volume to sample size.
If "abs." is set:
Absolute start volume (0...999.99 mL)
If "rel." is set:
Factor for relative start volume (0...±999999).
Calculated as: start V (in mL) = factor∗sample size
Dosing rate for start volume
(0.01...150 mL/min, max.)
<CLEAR> sets "max.".
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
Pause 2 (0...999999 s)
Waiting time after start volume, e.g. reaction time after
dosing of a start volume. The waiting time can be
aborted with <QUIT>.
Extraction time (0...999999 s)
During extraction time no dispensing occurs but the
titration does not stop. The extraction time can be
aborted with <QUIT>.
Measuring input (1, 2, diff.)
Inquiry only with measured quantities pH and U.
Measuring input 1 or 2 or differential amplifier;
connection of electrodes, see page 124.
With polarized electrodes, instead of the measuring
input the
polarization current (-127...127 µA)
or the
polarization potential (-1270...1270 mV, in steps of 10
mV)
is inquired.
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on
changeover from the inactive state to a measurement.
"OFF" means that the test is not performed.
Titration temperature (-170.0...500.0°C).
Temperature is measured at the start of the titration if a
T sensor is connected. The value is used for
temperature compensation in pH titrations.