Endress+Hauser Levelflex FMP55 Operating Instructions Manual page 135

Levelflex FMP55 PROFIBUS PA
Additional information
10) Ordering feature 540 "Application Package", option EB "Interface measurement"
Endress+Hauser
For FMP51/FMP52/FMP54 with the Interface measurement application package
for FMP55:
100 mm (3.9 in) for all antenna types
Signals in the upper blocking distance are only evaluated if they have been outside the
blocking distance when the device was switched on and move into the blocking distance
due to a level change during operation. Signals which are already in the blocking distance
when the device is switched on, are ignored.
This behavior is only valid if the following two conditions are met:
• Expert → Sensor → Echo tracking → Evaluation mode = Short time history or Long
time history)
• Expert → Sensor → Gas phase compensation → GPC mode= On, Without correction
or External correction
If one of these conditions is not met, signals in the blocking distance will always be
ignored.
A different behavior for signals in the blocking distance can be defined in the
Blocking distance evaluation mode parameter.
If required, a different behavior for signals in the blocking distance can be defined by
the Endress+Hauser service.
 35 Blocking distance (UB) for liquid measurements
UB
Operating menu
10)
and
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