Xylem DCX-22 SELF CONTAINED WATER LEVEL DATALOGGERS KELLER Logger DCX 4.0 - Manual (Page 14)

Endless (circular memory)
This function is enabled by the user for continuous recording by the device. That is to say, earlier
values get overwritten when the memory is full. Without this setting, the device stops recording when
the memory is full.
From the following table, we can see what the approximate data volumes and recording times are:
1 MBit 2 MBit
Interval
Number of
channels Number of measured
values per channel Recording
time Number of measured
values per channel Recording
time
1 second 1 28560 8 hours 57232 16 hours
1 second 4 7140 2 hours 14307 4 hours
10 sec. 1 28560 80 hours 57232 160 hours
10 sec. 4 7140 20 hours 14308 40 hours
1 min. 1 14280 10 days 28616 20 days
1 min. 4 6120 100 hours 12264 200 hours
10 min. 1 14280 100 days 28616 200 days
10 min. 4 6120 43 days 12264 86 days
1 hour 1 14280 1.6 years 28616 3.2 years
1 hour 4 6120 0.7 years 12264 1.4 years
8 hours 1 14280 13 years 28616 26 years
8 hours 4 6120 5.7 years 12264 11.4 years
Note:
The amout of memory available in the connected device (total), is displayed after Read Contents in
Reader and after Read Configuration in Writer / WL.
The difference in data volumes and recording times are due to the storage structure. Time intervals up
to and including 15 seconds can be saved along with the measured value, larger intervals need as
much extra storage space as a measured value.This structure enables data to be recorded at various
points in time, and not only continuously.
Device-Identity (for file name)
Display of the device description, which can be specified by clicking the menu command "Edit Device
Identity".
Comment
Entry field for any desired comment which will be written to the device after Write Configuration is
clicked.
Actual value
If the Online function is activated by clicking Online, this field displays the current value of the
selected channel. Updating takes place every second. In online mode, the recording status and
memory status (in the status bar) as well as the battery capacity display are updated. It is likewise
possible to display the current height to the desired length specification, taking into account the water
level configuration settings.
Operating Manual for Logger DCX 4.0 KELLER AG Page 14