Software features Chapter 3
Hydro 2000G/S Page 3-9
2. The pump speed falls to a predetermined reduced level (Reduced pump
speed in the dialogue - this can be zero) and an additional Measurement
delay allows the background level to fall before the alignment is performed
and the background measured. (This “Optical equilibration period” is the same
as the measurement delay).
3. The pump speed is returned to the higher rate for the sample to be added and
dispersed in the normal way.
4. Before the measurement stage is entered, the pump speed drops to the lower
level and the system waits for the duration of the Measurement delay before
measuring the sample. This delay allows the relaxation of the sample in the
flow cell so that a normal measurement can be obtained.
5. If repeat measurements are required the pump will return to the high level for
a brief re-dispersion period (the Measurement delay), then drop down again
for the measurement process to be repeated. This will continue for as long as
prescribed in the SOP.
MAN0385-1.0 Hydro 2000G-S.book Page 9 Friday, March 16, 2007 4:02 PM