Vaisala DRYCAP DMT340 SERIES Guia do Utilizador descarregar pdf (Página 111)

Chapter 4 ________________________________________________________________ Operation

VAISALA ______________________________________________________________________ 111

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 the Data Recording Quantities

If the device is provided with the optional display, the recorded quantities

are always those selected for the display. Up to three quantities can be

recorded at a time. See section Changing the Quantities and Units on

page 98 for instructions on how to select the display quantities with the

keypad.

DSEL

Use the serial line command DSEL [xxx] to select the quantities to be

recorded if the transmitter is not equipped with display/keypad.

You may also dump the logged data to the serial line in numeric form

with the following commands.

DSEL [xxx]

where

xxx = Data recording quantity. See Table 3 and Table 4 on page 19

for the quantities.

Enter the command without parame

ters and press ENTER to display

current recording parameters.

Example:

>dsel rh t tdf

RH T Tdf

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 72 for details about graphical display.

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Vaisala DRYCAP DMT340 SERIES Guia do Utilizador Página 111