Metrohm tiamo 1.2 Manual - Handbuch (Seite 484)

458 Method
Measuring parameters
The measuring parameters are defined on this tab.
Command name
25 characters, [ MEAS pH # ]
Name of the command.
Measurement
The two measuring modes Measurement with drift control or Meas-
urement without drift control are selectable.
Note
A constant measured value is often only achieved after a certain time, as mixing
and possibly the reaction itself require a certain time. The response time of an
electrode can also increase with time, i.e. reaching a constant measured value
takes longer and longer. In such a case drift-controlled measurement is par-
ticularly advisable, as the measured values are only accepted when equilibrium
has almost been achieved.
Measurement with drift control
[ on ], off
The measurement is carried out drift-controlled if this option is enabled. The
measurement is stopped as soon as the
Signal drift or the Stop measured
value pH is reached or a waiting time has elapsed. The corresponding pa-
rameters are not visible if this option is disabled.
Signal drift
0.1 ... [ 10.0 ] ... 999.0 mV/min (Titrando)
0.5 ... [ 10.0 ] ... 999.0 mV/min (Titrino)
The measured value is only accepted if the signal drift defined here has
been fallen short of.
Min. waiting time
[ 0 ] ... 999'999 s (Titrando only)
The measured value is only accepted if the minimum waiting time has
elapsed even if the signal drift has already been reached. The drift contin-
ues to be checked as the minimum waiting time is passing.