Emerson Rosemount 3100 Series, Reference Manual, Page: 54 / 144

Reference Manual
00809-0100-4840, Rev. BA
July 2008
Rosemount 3100 Series
4-24
Setting the Output
Damping
(The 3102/3105)
Screen display:
d
Factory default value:
3
The damping value is a time constant in seconds, and is applied as smoothing
to the displayed PV and the output current.
A new value may be entered up to 999 seconds. A large value will have the
effect of smoothing out rapid changes to the PV value, and smooth out the
effects of turbulence and ripples on the liquid surface. (It would be unusual to
select a value greater than 30 seconds.)
A value of zero may be edited, in which case no smoothing is applied to the
Current Output and transmitter readings immediately change the output.
NOTE:
Because The 3102 and The 3105 transmits nominally at once per second, a
damping time of zero will not necessarily give an immediate response.
NOTE:
This menu option is in the programming menu. See Figure C-2 on page C-3
for a map of the menu structure, showing how to access the menus.
To change the damping value:
a) If entering the menu system from the PV display, press the green button
↓
repeatedly until the “
d
” menu option is indicated (see above note.)
b) Press the blue button
→
to enter the “
d
” menu and to display the present
damping value.
c) If the damping value is correct, press the red button
↵
to exit to the menu.
(The menu option “
d
” re-appears. To get to the next menu, press
↓.)
d) Press the blue button
→
to start the editing mode. The first digit flashes to
indicate it can now be edited.
e) Press the green button
↓
repeatedly to edit the flashing digit.
f) Press the blue button
→
to move to the next digit. The digit flashes to
indicate it can be edited.
g) Repeat steps (e) and (f) until the last digit is flashing, and edited as
required.
h) Press the blue button
→
to confirm the new value. (The flashing stops.)
i) If the new value is correct, press the red button
↵
to save. The display
changes to the next menu option.
j) If the new value is incorrect, press the blue button
→
to exit to the menu.
The menu option “
d
” re-appears; re-start at step (b) or press
↓
for the next
menu option.