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5.21 Pressurized Lines
• Add or remove a SDI-12 sonde parameter with the
Hardware Setup
• Reinitialize the sampler
The stored data is lost as the sampler reformats its memory. As a
precaution, before clearing the memory, the sampler display will
show the following message:
DOWNLOAD DATA NOW
If you want to keep the stored data, download it before pro-
ceeding. When DONE is selected, the sampler clears the stored
data and reformats the memory partitions. The sampler then dis-
plays the new capacity of the partition memory.
If the duration is too short, try changing the data storage
interval or eliminating unnecessary reading types in the
Hardware or Module Setup. For example, a sampler configured
with a 730 Bubbler Module and a rain gauge storing data at a
one-minute interval, creates level and rainfall partitions that
hold 100 days of readings. Changing the storage interval to two
minutes extends the storage capacity to 201 days.
The sampler does not have to be running a program to store
readings. When the sampler is on, it stores readings at the
selected data storage interval. Once the partition is filled, the
readings roll over.
When the sampler is running a program, the partitions become
"triggered" by the programmed start time or the first enable
time, whichever is later. A triggered partition continues to log
readings at the selected interval, but will not replace any
readings taken after the trigger event. The sampler fills the par-
tition and then stops recording to preserve the data. The first
reading preserved in a full partition is one hour before the
trigger event. A full partition can be reset by starting another
program or changing storage parameters.
If you need continuous readings for analysis, be sure to collect
the readings before the partition fills or rolls over to avoid gaps
in the data.
The sampler can obtain samples from pressurized lines, as long
as the line pressure remains below 15 PSI (pounds per square
inch). Pressures greater than 15 PSI may prevent the sampler
from purging the suction line; moreover, extreme pressures can
force liquid past the pump, even when the pump is not running.
6712SR Refrigerated Sampler
Section 5 Extended Programming
INTERVAL CHANGED --
OR LOSE ALL DATA!
DONE
PARTITION MEMORY
WILL LAST 13 DAYS
5-41
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