Endress+Hauser Levelflex FMP54 - Page 180

Operating menu Levelflex FMP51, FMP52, FMP54 FOUNDATION Fieldbus
180 Endress+Hauser
Level unit 
Navigation  Setup → Advanced setup → Level → Level unit
Description Select level unit.
Selection SI units
• %
• m
• mm
US units
• ft
• in
Factory setting %
Additional information The level unit may differ from the distance unit defined in the Distance unit parameter
(→  159):
• The unit defined in the Distance unit parameter is used for the basic calibration (Empty
calibration (→  161) and Full calibration (→  162)).
• The unit defined in the Level unit parameter is used to display the (unlinearized) level.
Blocking distance 
Navigation  Setup → Advanced setup → Level → Blocking dist.
Description Specify upper blocking distance UB.
User entry 0 to 200 m
Factory setting • For coax probes: 0 mm (0 in)
• For rod and rope probes up to 8 m (26 ft): 200 mm (8 in)
• For rod and rope probes above 8 m (26 ft): 0.025 * Sondenlänge
Additional information 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 comp. → 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.
If required, a different behavior for signals in the blocking distance can be defined by
the Endress+Hauser service.