Aalborg DPC, Operating Manual

Page: 57 / 128

53
NOTE: The factory default value for the Standard Temperature is 70 ˚F (21.1 ˚C),
and for Normal Temperature is 32 ˚F ( 0.0 ˚C).

Standard Pressure and Normal Pressure menu selections allow the user to fi rst select the
desired pressure units of measure. By default, currently active pressure units will be select-
ed. Once the units are selected, the user can adjust the desired pressure value and then press
the joystick equivalent of an
ENT button to save it. By default, currently stored values will be
displayed.
NOTE: The factory default value for both Standard and Normal Pressure is
14.696 PSIA (1.0 atm).
Once Standard Temperature/Pressure and/or Normal Temperature/Pressure
values are changed, the corresponding PI mass fl ow readings shown on the
instrument display or transmitted via digital or analog interface will change
as well.

6.4.15.3 Display and Process Information (PI) Screens
The local OLED Process Information screens can be confi gured to be static (manual
control) or dynamic (automatic sequencing). In the static mode, pressing the joystick UP
allows the user to page through the PI screens in the forward direction, while pressing the
joystick DN pages through the PI screens in the opposite direction. When the last PI screen
is reached, the fi rmware “wraps around” and scrolls to the initial PI screen once again.
NOTE: PI screens which are not Enabled (masked) will be skipped. PI Screen #1
(Mass Flow Rate, Pressure, Temperature and Set Point reading)
cannot be Disabled.

The following settings are available for OLED Display:
a) Display Mode
This option determines whether the display screens are in static (manual control) or
dynamic (automatic sequencing) mode. Two selections are available: Static or
Dynamic. The default entry is Static (manual control).
b) Screen Cycle Time
This menu selection defi nes the time interval in seconds for each PI screen to be
displayed in the dynamic mode (automatic sequencing). Screen Cycle Time can be set
to any value between 1 and 3600 seconds (numerical entry).