YSI Vertical Profiler Systems - Manual (Page 19)

YSI Profiler System USER Manual
Step 4 (Study Information), shown below, deals with defining the actual column length of water
to step through and the time interval at which you intend to monitor.
Since the sonde starts at three (3) meters below the surface and proceeds through five-plus steps,
stopping no further than one (1) meter above the bottom, the actual monitored column of water
is ten (10) meters, start at 3 meters and end at 13 meters below the surface. You must enter the
Start and End depths (relative to the surface) in the appropriate boxes (see below).
In addition, you must enter the profiling step interval. In this example two (2) meter steps are
used, meaning the cable will complete one set of measurements, then pay out two meters, stop
and repeat these measurements. This will be repeated until it reaches the bottom of the profiling
column (13 meters below the surface). The last step is often less than the defined interval if the
profiling depth is not evenly divisible by the number of steps. In this case 10 meters divided by
2 meter intervals work out to be a whole number.
The Profiles per day are 6, indicating that a profiling routine will be initiated every four (4)
hours beginning with local time of 00:00:00 (midnight). Enter six (6) into the appropriate box.
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669523 Rev B Page 2-10