CRVW3 3-Channel Vibrating-Wire Datalogger
91
11.2 Manual Data Collection
Although automatic data collection regularly retrieves the data from a CRVW3
station and stores it on the
LoggerNet
computer, there may be times when data
needs to be retrieved without having to wait for the next scheduled poll (data
collection) event to occur. For example, if data is collected automatically only
once per hour or once every four hours, manual collection can be used to
ensure data collection is working properly without having to wait for an hour
or more to confirm operation. For those cases, manual data collection can be
used. It is also possible to retrieve data from a CRVW3 using manual
collection when a technician visits the CRVW3 field site.
11.2.1 Manual Data Collection from the
LoggerNet
Station
Use the
Connect Screen
to collect data manually from a station using
LoggerNet
. Establish a preferred connection to a specific CRVW3 device from
which data is to be collected by highlighting the station in the
Stations
list and
pressing the
Connect
button.
There are two kinds of manual collection methods available:
Custom
Collection
and
Collect Now
.
Use
Collect Now
when you want the collection of data to operate just as it
does when automatic/scheduled collection occurs, except that the collect
operation will occur immediately and not wait for the next automatic event.
With
Collect Now
, data that is collected is placed into the same .DAT file used
when automatic collection occurs (defined in the
Setup Screen
). Only those
records are collected from the device that have not been collected already
during previous scheduled collections or previous
Collect Now
events. The
records collected are placed into
LoggerNet’s
cached memory location so that
Numeric Displays
and
Graphs
, and other client applications (such as
RTMC
and
LNDB
Analyzing and Publishing Historical Data
(p. 94)
)
will see the data and process/display it.
To use the
Collect Now
feature, simply ensure you are connected to the
station, and press the
Collect Now
button.
Collect Now
can also be used from
the
Status Monitor
.
Use
Custom Collect
when you want to retrieve data from a station in a manner
that is completely independent from the scheduled collection process. Different
.DAT files are created and will be placed into a separate folder. A custom
collection has no impact on the execution of the automatic collection schedule.
Any records stored on the device may be collected. The cached memory
location of
LoggerNet
is not updated, so there is no impact on
Numeric
Displays
or
Graphs
or other client applications.
To use the
Custom Collect
feature, press the
Custom
button while connected
to the station of interest in the
Connect Screen
. For more information about
custom data collection, see Section 5.1.2.2 of the
LoggerNet
manual.
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