Echo Tuning - Emerson Rosemount 5400 Series Reference Manual

Reference Manual
00809-0100-4026, Rev HA
Distance calibration
1.
2.
Level calibration
1.
2.
Figure 5-7. Distance and Level Calibration
5.3.7

Echo tuning

When Basic Configuration is performed, the transmitter may need to be tuned to handle
disturbing objects in the tank. There are different methods available for handling disturbance
echoes with the Rosemount 5400 Series Transmitter:
„
„
The Guided Setup in the RRM configuration program includes a Measure and Learn function which
automatically registers false echoes and creates an ATC (see
The created ATC is based on the present tank spectra and process condition settings.
Disturbances below the product surface might not be handled by the Measure and Learn
function.
Basic Configuration/Start-up
Measure the actual distance between the Upper Reference Point and the product
surface.
Adjust the Calibration Distance so that the Distance measured by the transmitter
corresponds to the actual distance.
The Calibration Distance parameter is available via
HART command [2, 3, 2, 4, 1],
or
RRM:
a. Select the Tank icon under Device Config/Setup in the RRM workspace.
b. In the Tank window, select the Geometry tab.
c. Select the Advanced button.
d. Enter the desired value in the Calibration Distance field and select the Store button.
Measure the actual Product Level.
Adjust the Tank Height so the product level measured by the transmitter corresponds
to the actual product level.
Reference point
ATC
False echo registration, see
Section 5: Basic Configuration/Start-up
Distance
Tank height
"Registration of false echoes" on page 135
November 2014
Reference point
"Guided setup" on page
Level
92).
83