True Echo Detection; Accessing The True Echo Detection Menu; Configuring True Echo Detection - ABB LST300 Operating Instruction

True Echo Detection

Accessing the True Echo Detection menu

1 Log on to the LST300 at the Standard or Advanced level .
2 Select Diagnostics from the main menu .
3 Select True Echo Detection from the "Diagnostics"
submenu .

Configuring True Echo Detection

1 Install LST300 following the instructions in chapter 2
"Mounting" . Avoid as many obstructions as possible and
ensure the transmitter has clear line of sight to the target
liquid surface .
IMPORTANT (NOTE)
The best way to ensure the correct echo is measured is a good
installation with clear line of sight . The True Echo Filtering
function is used optimally when obstructions cannot easily be
avoided, such as submerged pumps and agitators .
2 Ensure the tank is empty enough for all obstructions to be
visible . Any obstructions that are submerged cannot be
detected .
L S T 3 0 0 | C O M PA C T U LT R A S O N I C L E V E L T R A N S M I T T E R | L S T 3 0 0 – E N R E V. E
3 Navigate to the "True Echo Detection" menu, as explained in
section "Accessing the True Echo Detection menu" .
4 Select Start Tank Profiling from the "True Echo Detection"
submenu .
5 Select OK to start Tank Profiling .
IMPORTANT (NOTE)
Tank profiling may take up to 2 minutes to complete . During
this time no measurement values are used as output .
6 After two minutes, select Tank Profiling Status to check
whether the Tank Profiling is complete . The status should be
Finish .
7 Navigate to the signal waveform display as explained in
section "Accessing the waveform display" .
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