Vaisala DMT340 User Manual download pdf (Page 109)

Chapter 4 _________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 107

3. Select Pressure compensation and press the ►arrow button to

confirm you selection.

4. Press SET and enter the pressure value by using the arrow buttons.

5. Press OK and EXIT to return to the basic display.

Using Buttons on the Motherboard

Pressure set buttons (P

chk

and P

set

) can be used to set the process pressure.

0504-052

Figure 66 Pressure Set Buttons on the Motherboard

The numbers refer to Figure 66 above:

Pressure set button

Pressure check button

Press check button (P

chk

) and a red led will flash the current pressure

setting in bar

Press the set button (P

set

) to set the pressure value. The number of presses

equals the number of bar

to be set (for example, three presses = three

bar

). After a few seconds, the red led will confirm the setting by flashing

the new pressure value.

Using Serial Line

XPRES and PRES

Command XPRES must be used if the value is changed frequently (for

example, by an automatic system that updates the value). Its value is not

retained at reset, and when set to 0; last value set with PRES is used

instead. Use the serial line and do the following:

PRES [aaaa.a]<cr>

XPRES [aaaa.a]<cr>

where

1 2 ... 104 105 106 107 108 109 110 111 112 113 114 ... 190 191

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Vaisala DMT340 User Manual Page 109