Owner's manual

3 General settings for exploratory and determination mode
757 VA Computrace – Software
36
Sweep parameters:
Hydrodynamic (measurement) [ on, off ; off ]
Enable/disable stirring of the RDE/SSE during the sweep.
Start potential (V)
[ -5...+5 V ; -0.9 V ]
Start voltage for the voltage sweep.
End potential (V)
[ -5...+5 V ; -0.1 V ]
Final voltage for the voltage sweep.
Voltage step (V)
[ > 0 V ; 0.006 V ]
Voltage step for direct voltage ramp.
Voltage step time (s)
[ > 0 s ; 0.4 s ]
Time interval after which the voltage in the sweep is in-
creased or decreased by the amount
Voltage step
.
Sweep rate (V/s)
[ read only ]
Display of the ramp slope calculated as
Voltage step / Voltage
step time
.
Notes:
The DC measurement mode can be used with all types of
electrodes except for DME and SMDE in the determination
mode.
The following conditions apply to the definition of the
Voltage
step time
:
Voltage step time > 270 µs
(HMDE/RDE)
Voltage step time > 20 ms
(DME)
Voltage step time > Drop size × 40 ms + 10 ms
(SMDE)
The measurement time
t (i)
is defined as follows:
t (
i
) = 20/16.67 ms
(50/60 Hz)