Metrohm 794 Basic Titrino - Manual (Page 32)

2.7. Parameters, key
794 Basic Titrino
28
pause 0 s
**titr.
meas.input: 1
I(pol) 1 µA
U(pol) 400 mV
electrode test: OFF
temperature 25.0 °C
Waiting time (0...999999 s)
Waiting time, e.g. for equilibration of the electrode after
the start or reaction time after dosing of start volume.
The pause can be aborted with .
Measuring input for pH and U (1, 2, diff.)
Request for measuring input for pH and U.
Measuring input 1 or 2 or differential amplifier;
connection of electrodes, see page 155.
With polarized electrodes, instead of the measuring
input the
polarization current (-127...127 µA)
or the
polarization voltage (-1270...1270 mV, in steps of 10
mV)
is inquired.
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on
changeover from the inactive standby state to a
measurement. "OFF" means that the test is not
performed.
Titration temperature (-170.0...500.0 °C)
The temperature is continuously measured if a T
sensor is connected. This parameter is used for
temperature compensation in pH titrations.
>stop conditions
stop V: abs.
**titr.
stop V 99.99 ml
**titr.
factor 999999
**titr.
stop pH OFF
**titr.
Stop conditions for the titration
If several stop conditions have been set, the criterion
which is met first applies.
Type of stop volume (abs., rel., OFF)
"abs.": absolute stop volume in mL.
"rel.": relative stop volume to sample size.
"OFF": stop volume switched off. Stop volume is not
monitored.
If "abs." is set:
Absolute stop volume (0...9999.99 mL)
If "rel." is set:
Factor for relative stop volume (0... ± 999999)
Calculated as: Stop V (in mL) = factor ∗sample size
Stop at measured value (input range dependent on
measured variable:
pH: 0... ± 20.00, OFF
U, Ipol: 0... ± 2000 mV, OFF
Upol: 0... ± 200.0 µA, OFF)
sets "OFF".
"OFF" means that the criterion is not monitored.