126
Reference Manual
IP2048/RM, Rev AA
Appendix F: Configuring Using HART
January 2015
F.3.19
Lower range value (P016)
This defines the process value (PV) represented by a 4 mA output from the transmitter. The span
of the 4–20 mA current output is defined by the
Upper Range Value
parameter (
page 125
) and
the
Lower Range Value
parameter.
Consider a tank with a 120 gallons capacity. When empty, a 4 mA output current is required
from the transmitter. Therefore, the lower range value is set to 0. The upper range value is
typically set to 120 (gallons) for the 20 mA output current to indicate an full tank.
The lower range value can be greater than the upper range value, in which case the current
output will decrease for an increasing process value (PV).
Note
The displayed units are selected using the parameter
Primary Variable Units
(see
page 120
). Changing units does not re-scale the lower range value.
Field Communicator
To view or change the lower range value:
1.
From the
Home
screen, select
2: Configure
.
2.
Select
2: Manual Setup
, and then
1: Basic Setup
.
3.
Select
4: Lower Range Value P016
.
4.
If a change is required:
(
a
) Input a new value, and then select “
ENTER
” to save it.
(
b
) Press “
SEND
” to update the transmitter.
Note
When messages appear, take appropriate action if needed and press “
OK
”.
Mobrey MCU900 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:MSP400RH
”).
3.
Select
OUTPUT
,
CURRENT
, and then
Low Range Val
.
4.
Follow the on-screen instructions to input and save the new setting. (Press the
Enter
(
) key if prompted to change mode to “
off-line
”).
5.
Select “
Quit
” to exit to the previous menu.
Fast Keys
2, 2, 1, 4
Lower Range Value P016
0 ft
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)
Low Range Val P016
0.000ft
Esc=Quit =Edit
(Mobrey MCU901 Screen)
Summary of Contents for MSP400RH
Page 2: ......
Page 4: ......
Page 16: ...6 Reference Manual IP2048 RM Rev AA Section 2 Transmitter Overview January 2015 ...
Page 54: ...44 Reference Manual IP2048 RM Rev AA Section 4 Starting up January 2015 ...
Page 80: ...70 Reference Manual IP2048 RM Rev AA Appendix A Reference Data January 2015 ...
Page 84: ...74 Reference Manual IP2048 RM Rev AA Appendix B Product Certifications January 2015 ...
Page 87: ...77 Reference Manual IP2048 RM Rev AA Appendix C Integrated Display Menus January 2015 ...
Page 90: ...80 Reference Manual IP2048 RM Rev AA Appendix C Integrated Display Menus January 2015 ...
Page 98: ...88 Reference Manual IP2048 RM Rev AA Appendix E Field Communicator January 2015 ...