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TECHNICAL DATA
OPTIWAVE 5200 C/F
8
Measurement modes
"Direct" mode
If the dielectric constant of the tank contents is high (ε
>1.8), the level signal is a reflection on the surface of the tank contents.
r
"Full TBF" mode
TBF = Tank Bottom Following. If the dielectric constant of the tank contents is very low (ε
<1.6), you must use "Full TBF" mode to
r
measure level correctly. The device uses the radar reflection on the bottom of the tank (the signal goes through the tank contents).
"TBF Partial" mode
If the dielectric constant of the tank contents is low (ε
=1.5...1.7), you must use "TBF Partial" mode to measure level correctly. TBF
r
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.
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.
61
03/2012 - 4001904901 - HB OPTIWAVE 5200 R01 en
www.krohne.com
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