Emerson Rosemount 5600 Series, Reference Manual, Page: 75 / 128

75
Reference Manual
00809-0100-4024, Rev CA
Configuration
March 2020
Configuration
4.9.2 Bottom Echo Handling
4.9.3 Full Tank Handling
Bottom Echo Visible
This parameter is automatically set depending on tank type and tank bottom type.
By setting this parameter the bottom echo will be treated as a disturbance echo to
facilitate tracking of weak surface echoes close to the tank bottom. If this
parameter is not set searching for a lost surface echo is restricted to a region close
to the tank bottom. Only set this parameter if the bottom echo is visible
The figure shows scenarios (checked tanks) where the bottom echo is visible.
Always check if the transmitter shows a value for the bottom at empty tank before
marking the checkbox. Only flat bottom tanks have checkbox marked as default.
Set this parameter in Advanced Service.
If Empty Tank Handling is set to automatic, the choice of Tank Bottom Type
controls the setting of Bottom Echo Visible. For Tank Bottom Type flat, the Bottom
Echo Visible parameter is always set.
If the Empty tank Handling function is not set to automatic, the Bottom Echo
Visible parameter is set manually for all tank types. However, the Tank Bottom Type
flat always has Bottom Echo Visible set.
Invalid Level Alarm Is Not
Set If Tank Is Empty If the surface echo is lost close to the bottom of the tank, setting this parameter
suppresses the “invalid” display.
Invalid Level Alarm Is Not
Set If Tank Is Full
If the surface echo is lost close to the top of the tank, the level value will normally
be displayed as “invalid”. Set this parameter to suppress the “invalid” display.
Note
By setting this parameter the analog output will not enter alarm mode for invalid levels
close to the tank bottom or close to the antenna.