Vaisala HMT330 - Manual (Page 118)

User's Guide _______________________________________________________________________
116 __________________________________________________________________ M210566EN-K
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 does 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 100.
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]<cr>
where
xxx = Data recording quantity. See Table 3 on page 19 and Table 4
on page 19 for the quantities.
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. See section
Graphic History on page 68 for details about graphical display.
You may also dump the logged data to the serial line in numeric form
with the following commands.
DIR
Use the serial line and enter the DIR command to check the available
files.
Without the data logger module, the device records six files (six
observation periods) for each selected quantity. The data logger raises the