Metrohm 796 Titroprocessor - Manual (Page 182)

8.8 MEAS
796 Titroprocessor, Instructions for use 176 176
Data acquisition
Depending on the selected measuring procedure, data acquisition may
have different settings.
Meas. procedure
Single or multiple measurement
standard | multiple
Switches between standard and multiple measurement.
Sampling time
Time interval for raw data acquisition
for 'Standard' measuring procedure 1…9999 s | off
The sampling time determines the time pattern for pre-
senting the raw data which are to be taken into account
when determining the drift value during a drift-controlled
single measurement. It has no influence on the effective
measurement. The raw data can be shown as a curve.
This can be useful in assessing the setting behavior of a
sensor.
U(pol)
Polarization voltage (for MEAS_UPOL*)
-1270…400…1270 mV
The polarization voltage is the voltage which is applied to a
polarized electrode during amperometric measurement.
The resultant measuring quantity is I
pol
/µA.
I(pol)
Polarization current (for MEAS_IPOL*)
-127…1…127 µA
The polarization current is the current which is applied to a
polarized electrode during voltametric measurement. The
resultant measuring quantity is U
pol
/mV.
8.8.2 Multiple measurement
A multiple measurement is a series of (drift-controlled) single measure-
ments, each of which is made in a particular time pattern according the set
measuring parameters and produces a single measured value. Multiple
measurements can be used to record alterations of certain measuring
quantities such as pH or temperature over a longer period of time and show
them as a curve. This ensures that each individual measurement, thanks to
the drift-controlled measurement acceptance, is always a reliable one. Up to
1000 measured values can be recorded in this way.
The measuring procedure (standard measurement / multiple measurement)
can be selected under the extended parameters (softkey [*Param]) to-
gether with further data recording parameters.