Technical data

92
HB EML3020 A-(en)LevelWave LR01
Measurement modes
"Direct" mode
If the dielectric constant of the liquid is high (ε
r
≥1.8), the level signal is a reflection on the surface
of the liquid.
"TBF Partial" mode
If the dielectric constant of the liquid is low (ε
r
≥1.8, for long distance measurement), you must use
"TBF Partial" mode to measure level correctly. TBF Partial" is an automatic mode that lets the
device make a selection between "Direct mode and "TBF" mode. If the device finds a large radar
reflection above the "tank bottom area" (the bottom 20% of the tank height), the device will use
"Direct" mode. If the device finds a large radar reflection in the "tank bottom area", the device
uses TBF mode. This mode can be used only in tanks with flat bottoms.
"Full TBF" mode
TBF = Tank Bottom Following. If the dielectric constant of the liquid is very low (ε
r
<1.8), you must
use "Full TBF" mode to measure level correctly. The device uses the radar reflection on the
bottom of the tank (the signal goes through the liquid). This mode can be used only in tanks with
flat bottoms.
CAUTION!
"FULL TBF" AND "TBF PARTIAL" MODES
It is important to enter the correct dielectric constant value in menu item 2.5.3 Er Product. If not,
the device will not measure level accurately.