Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 65
below. The period for the trend and max/min calculations depends on the
selected graph window as follows:
Table 11
Periods for Trend and Max/Min Calculations
Observation Period
Period for Trend/Max/Min
Calculations (Resolution)
3 hours
1.5 minutes
1 day
12 minutes
10 days
2 hours
2 months
12 hours
1 year
3 days
4 year*
12 days
* Shows the maximum logging period of the data logger module (available when data
logger module is installed)
Use the following functions in the graphical display:
- Press
the
NEXT
button to change between the trend graph and
max/min graph for the quantities selected for display.
- Press
the
EXIT
button to return to the basic display.
- Press
the
▼▲
arrow buttons to zoom in and out in the graph window.
- Press
the
◄►
arrow buttons move the cursor (vertical bar) along the
time axis. The cursor mode allows you to observe individual
measuring points. The numerical value at the cursor position is shown
at the left upper corner. The right upper corner shows the time from
the present to the chosen moment (without the logger module), or the
date and time at the cursor position (when the logger module is
installed).
- If the optional data logger module is installed, you can scroll the
cursor off the screen to move to a new point on the time axis. The new
date will be displayed, and the cursor will be centered at the date
where the cursor scrolled off the screen.
0706-030
Figure 42 Graphical Display with Data Logger
The time that is shown below the graph is adjusted with the current time
offset of the transmitter. If you change the transmitter's date and time
setting, the displayed timestamps in the history graph change
accordingly. For an explanation of the effect of changing the date and
time manually, see section Data Logger Module on page 58.
