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10 Measured value memory/data logger
VEGAMET 861 • 4 … 20 mA/HART
58866-EN-200401
Note:
If the recording is started, previously recorded values of this curve are
deleted.
The recording can be stopped automatically if the memory in the
VEGA instrument is full. Select the option "
Stop recording when
memory is full
". If this option is selected, the older measured values
will be overwritten automatically (ring buffer).
10.2 Start of the recording
After having adjusted the recording mode and the start/stop condi-
tions, these settings have to be transferred to the instrument ("
Device
data - Save in device
"). Activate the trend recording by pushing the
button "
Start recording
". The current utilisation of the memory and the
number of recorded measured values is now displayed under "
Sta-
tus
". Modification of the recording conditions is not possible during a
recording.
10.3 Load recording from device
To load a saved curve from the device, select the page "
Diagno-
sise - Measured value memory
" and click with the right mouse key
to the diagram. Select in the opening popup menu the entry "
Load
recording from device
". A dialogue window opens in which the curve
and the range can be selected. In the list box for selecting the curve,
all curves are shown which are currently activated in the controller.
Under "
Range
" you see the available range on the right which can be
limited by the fields "
Begin
" and "
End
". Through this, the time required
for reading out the curve can be considerably reduced.
Further information on trend recording is available in the online help of
the corresponding DTM.
10.4 Save to SD card
The measured values are always stored in the internal memory of
the instrument and can be read out again via the DTM. In addition,
the measured values can be stored on the supplied memory card
(MicroSDXC) as CSV file. This has the advantage that the memory
card can be removed and the recorded values can be accessed
elsewhere.
The card reader is only accessible when the housing is open. It is
located under the display cover and is labelled "
SD Card
".
Note:
The memory card may only be removed if it has previously been
safely removed from the system via the menu item "
Diagnosis - De-
vice memory
".
