Emerson Rosemount 3100 Series Reference Manual

201
Reference Manual
00809-0100-4840, Rev CB
Appendix F: Programming the 3102 and 3105 using HART
February 2015
Programming the 3102 and 3105 using HART
F.4.8 Echo size (D911)
The size of the echo returned from a surface depends on the surface range, gas composition and
temperature, transmitter performance, in-tank conditions (turbulence, presence of surface
foam, and draughts), and other factors.
The received echo strength may vary from pulse-to-pulse but monitoring the read-only
parameter Echo Size (D911) indicates the latest echo strengths.
The indicated value is an averaged percentage of the last five echoes, with 100% representing a
saturated returned signal.
Field Communicator or AMS Device
Manager
To view the echo strength
1. From the Home screen, select 3: Service Tools.
2. Select 1: Alerts.
3. Select 2: Diagnostic Data.
4. Select 1: Target Data.
5. Select 2: Echo Size D911.
6. When finished, select EXIT to exit to the previous menu.
Rosemount 3490 Series Control Unit
To view the echo strength
1. From the Main Menu screen, select MONITOR.
2. Select the transmitter (e.g. “Tx1: 3102”).
3. Select DIAGNOSTICS
4. Select Echo Size.
5. When finished, use the ESC key to exit to the previous menu.
Fast Keys
3, 1, 2, 1, 2
Echo Size D911
53 %
EXIT
HELP
(Field Communicator Screen Shown)
Echo Size D911
75%
(Rosemount 3491 Screen Shown)

Emerson Rosemount 3100 Series Specifications

General

Brand	Emerson
Model	Rosemount 3100 Series
Category	Transmitter
Language	English