Users Manual Part 1

disturbance echo to facilitate tracking of weak surface echoes close to the tank bottom.
This function may be useful for products which are relatively transparent for microwaves,
such as oil.
Figure 7-24: Bottom Echo Visible
A
C
E
E
F
D
C
B
D
A. Product surface near bottom of tank
B.
Empty tank
C. Signal amplitude
D. Distance
E. Surface echo
F. Echo peak from tank bottom (at the electrical distance when product in the tank)
Prerequisites
Before enabling the Bottom echo visible when tank is empty parameter:
• Analyze the echo curve and check that a bottom echo is visible when tank is empty.
• Verify that the Bottom Offset value is correct.
The Bottom echo visible when tank is empty parameter is only available in Rosemount
Radar Master Plus.
Procedure
1.
Select Configure → Level Setup → Advanced.
2. Under More Advanced Options, select Empty Tank Handling.
3. In the Empty Tank Handling list, select User Defined.
4. Select the Bottom echo visible when tank is empty check box.
Reference Manual Service and troubleshooting
00809-0100-4418
September 2022
Rosemount 3408 Level Transmitter 101