Vaisala PTU300 Podręcznik Użytkownika Pobierz pdf (Strona 60)

User's Guide ______________________________________________________________________

58 __________________________________________________________________ M210796EN-A

Graphic History

The graphical display shows the data trend of the selected quantities,

one at a time. The graph is updated automatically while measuring.

Use the following functions in the graphical display:

- Press the left function key NEXT to have the trend graph and

max/min graph in turns and browse through the quantities selected

for display.

- Press the right function key EXIT to return to the basic display.

0604-057 and 0604-058

Figure 32 Graphical Display

Trend graph: Shows you a curve of average values. Each value is a

calculated average over a period. See Table 10 below.

Max/min graph: Shows you the minimum and maximum values in a

form of curve. Each value is max/min over a time period. See Table

10 below.

Table 10 Periods for Trend and Max/Min Calculations

Observation Period Period for Trend/Max/Min

Calculations (Resolution)

20 minutes 10 seconds

3 hours 90 seconds

1 day 12 minutes

10 days 2 hours

2 months 12 hours

1 year 3 days

- Press the up/down arrow keys ~ to zoom in and out the time in

the graph view.

- Press the left/right arrow keys qp to switch to the cursor mode

where you can observe individual measuring points. Press an

arrow key to move the cursor (vertical bar) along the time axis.

The numerical value at the cursor position is shown at the upper

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 172 173

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Vaisala PTU300 Podręcznik Użytkownika Strona 60