Nivetec Echo Smart Series, Руководство по эксплуатации и установке

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4.3.4. Historical Trend Display (Figure 4.8)
The EchoSmart Controller captures and stores the current measurement value every
six minutes. The database is updated on a “first in/first out” basis to maintain a
continuous register of the most recent seven days of data for all sensors. Newest
data is reported on the right side of the screen.
The Historical Trend Display provides a graphical illustration of stored
measurements for the selected sensor. The user may choose to view from one to
seven days of data.
Figure 4.8: Historical Trend Display
The Historical Trend Display is enabled at the Modify Settings Display.
4.3.5. Modify Settings Display (Figure 4.9)
This display is used to enter the primary parameter settings for each sensor and to
enable the Historical Trend Display and the Tank View Display. A Display Contrast
adjustment function is also found here.
Changes are implemented once entered and the user exits the display. No
confirming command is required.
Descriptions of parameter functions are found in Section 9.0.