Vaisala PTU300 - Manual (Page 125)

Chapter 4 _________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 123
Data Recording
Data recording function is always on and collects data automatically into
the memory of the device. If the optional data logger module is installed,
the transmitter uses it automatically. Recorded data do not disappear
from the memory when the power is switched off. Collected data can be
observed in a form of a graph in the graphical view of the display or it
can be listed out by using the serial line or MI70 Link program.
Selecting Data Recording Quantities
If the device is provided with the optional display, the recorded quantities
are always those selected for the display. Up to four quantities can be
recorded at a time. For instructions on how to select the display quantities
with the keypad, see section Changing Quantities and Units on page 101.
DSEL
Use the serial line command DSEL to select the quantities to be recorded
if the transmitter is not equipped with display/keypad.
DSEL [xxx]
where
xxx = Data recording quantity. For more information on available
quantities and units, see Table 4 on page 22. For more
information on optional quantities, see Table 5 on page 22.
Example:
>dsel rh t tdf
RH T Tdf
>
Enter the command without parameters and press ENTER to display the
current recording parameters.
View Recorded Data
If the device is provided with the optional display, the graphical display
shows the data of the selected quantities, one at a time. For details about
graphical display, see section Graphic History on page 70.
You may also dump the logged data to the serial line in numeric form
with the following commands.