Vaisala Hydromet Data Collection Platform Bedienungsanleitung Seite 161

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Chapter 5 ________________________________________ Advanced Use of Lizard Setup Software
VAISALA______________________________________________________________________ 159
Average value for the next ten minutes after the half hour can be
obtained with the following query (Query 2 Figure 77 on page 158):
- Function: Average
- Start: 1800 s
- Period: 600 s
Note that the start for a query is set backwards from the current time (for
example, 0 means current), and the value equal to the total duration
starts the query from the oldest update interval. Both the query start time
and the period must be equal to or multiplied from the update interval.
0711-093
Figure 78 Calculations View: Setting Up Queries
You can set up queries for generic statistical calculations in the
Calculations view presented in Figure 78 on page 159.
When you open the Calculations view and select a generic statistic
from the Selected list box, a Configure frame appears on the right of
the view. A Configuration Item frame is at the bottom of this frame.
The Configuration Item frame contains Add and Remove buttons and
one default query which acts as a template for new queries.
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