Metrohm tiamo 2.3 Manual - Manual (Page 953)

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tiamo 2.3 ￭￭￭￭￭￭￭￭ 937
Switch off automatically
on | off (Default value: on)
If this check box is activated, the stirrer will be switched off automatically
when the command has finished. This parameter is displayed only for
Titrandos, 855 and 867.
5.6.4.3.3 MEAS pH - Measuring parameters
Tab: Method ▶ MEAS pH ▶ Properties... ▶ Measuring parameters
Command name
Name of the command.
Input 25 characters
The parameters for the measuring procedure can be defined on this tab.
Measurement
The two measuring modes Measurement with drift control or Meas-
urement without drift control can be selected.
Selection Measurement with drift control | Measure-
ment without drift control
Measurement with drift control
The measurement is carried out drift-controlled if this option is selec-
ted. The measurement is canceled as soon as the Signal drift or the
Stop measured value pH is reached or a defined Waiting time has
elapsed. The corresponding parameters are not visible if this option is
disabled.
Measurement without drift control
The measurement is carried out without drift control if this option is
selected. The measurement continues until one of the stop criterions
Measuring time or Stop measured value pH is met. The corre-
sponding parameters are not visible if this option is disabled.
Note
A constant measured value is often only reached 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. Drift-controlled
measurement is particularly advisable in such cases, as the measured
values are not applied until equilibrium has almost been reached.