Metrohm 746 VA Trace Analyzer - Manual (Page 412)

5.7.3 Alphabetical instruction list
746 VA Trace Analyzer / 747 VA Stand
5-261
PSWEEP Page: S Stand: M, A Abbreviation: PSW
Instructions t/s Main parameters Auxiliary parameters
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## .. PSWEEP XXXXX U.start ........mV Resolution ......../V
t.depos ........s
Function Sweep for PSAMODE measurement mode.
Parameter Range; Default value / Meaning
t/s display only
Time for sweep
The time for the entire sweep is displayed in the line time (which can
not be edited) and is calculated as follows:
Sweep time = t.depos + 6 s
U.start -3000...3000 mV; -
Initial voltage
Initial voltage for the sweep. This voltage is applied to the electrodes
during the enrichment time
t.depos .
t.depos 0.1...600.0 s; 60.0 s
Deposition time
During this time, the voltage U.start is applied to the electrodes. The
preset voltage is then switched off and the free voltage drop measured
for 6 s.
Resolution 50...150 /V; 100 /V
Resolution
Number of intervals per volt for conversion of the segment curves U vs t
into substance curves t/U vs U. The lower the resolution selected, the
greater the smoothing of the substance curve.
Description The PSWEEP instruction starts the sweep defined in the parameters for
the PSAMODE measurement mode. A constant voltage U.start is
applied to the electrodes for a predetermined time t.depos , the freely
dropping voltage U is then measured for 6 s as a function of time.
Adjustable parameters:
PSWEEP
U.start
t.depos
Resolution
U
t
U.start
t.depos t.meas = 6 s