58
Reference Manual
00809-0200-4840, Rev BA
December 2014
Section 4: Configuration
Rosemount 3490 Series Control Unit
To view or change the lower range value:
1.
From the
Main Menu
screen, select
SETUP
.
2.
Select the transmitter (e.g. “
Tx1: 3107
”).
3.
Select
OUTPUT
.
4.
Select
CURRENT
.
5.
Select
Low Range Val
.
6.
Follow the on-screen instructions to input and save the new setting. (Press the
Enter
(
) key if prompted to change the mode to “off-line”).
7.
Select “
Quit
” to exit to the previous menu.
4.3.20
Damping (P020)
The damping value is a time constant in seconds, and is applied as smoothing to the level
reading and the output current.
A larger value will have the effect of smoothing out rapid changes of level, and smooth out the
effects of turbulence and ripples on the liquid surface.
A value of zero can be edited, in which case no smoothing is applied and transmitter readings
immediately change the output.
Note
The pulse repetition frequency of the transmitter is one pulse per second, which means
that the system response time cannot be faster than this.
Field Communicator or AMS
To view or change the damping:
1.
From the
Home
screen, select
2: Configure
.
2.
Select
2: Manual Setup
.
3.
Select
1: Basic Setup
.
4.
Select
5: Damping P020
.
5.
Input a new value, and then select “
ENTER
” to save it.
6.
Press “
SEND
” to update the transmitter.
Note
When messages appear, take appropriate action if needed and press “
OK
”.
Fast Keys
2, 2, 1, 5
Low Range Val P016
0.000ft
Esc=Quit =Edit
(Rosemount 3491 Screen)
Damping P020
3.0 s
3.0
ESC
DEL
ENTER
HELP
w
s
q
a
z
Lock
Shift
@ &
á ü
x
e
d
c
r
f
v
t
g
b
y
h
n
u
j
m
*
-
+
/
.
0
7
4
1
8
5
2
9
6
3
i
k
o
l
FN
(Field Communicator Screen)
Summary of Contents for 3107
Page 2: ......
Page 4: ...Reference Manual 00809 0200 4840 Rev BA Title Page December 2014 ...
Page 16: ...6 Reference Manual 00809 0200 4840 Rev BA Section 2 Transmitter Overview December 2014 ...
Page 145: ......
Page 146: ......
Page 147: ......
