Commissioning
Prosonic S FMU95 PROFIBUS DP
52
Hauser
9.3.8
Parameter set "Check value"
• This parameter set starts inference echo suppression (mapping).
• To record all the interference echoes, perform mapping at the minimum level
possible (ideally with an empty vessel).
• If it is not possible to empty the vessel during commissioning, record preliminary
mapping when the vessel is partially filled. Repeat mapping when the level reaches
approximately 0 % for the first time.
A
B
(a)
(a) (b)
(c)
C
(a) (b)
A0032724
43
Operating principle of the interference echo suppression (mapping) function
A
The echo curve (a) contains an interference echo and the level echo. Without mapping, the interference echo
would also be evaluated. This is not desired.
B
Mapping generates the mapping curve (b). This suppresses all the echoes that are inside the range of
mapping (c).
C
Afterwards, only echoes that are higher than the mapping curve are evaluated. The interference echo is below
the mapping curve and is therefore ignored (not evaluated).
Navigation
Level → Level (LVL) N → Basic setup → LVL N check value
Parameter
•
Actual distance
Displays the distance D currently measured between the sensor membrane and the
surface of the product.
•
Check distance
Compare the distance displayed with the actual value and enter the result of the
comparison. Based on the entry, the device automatically determines the range of
mapping.
•
Distance = ok
The displayed distance and actual distance match.
→ Continue with the parameter set
LVL N dist. map.
.
•
Dist. too small
The displayed distance is smaller than the actual distance.
→ Continue with the parameter set
LVL N dist. map.
.
•
Dist. too big
The displayed distance is larger than the actual distance.
→ Mapping is not possible.
→ Setup for sensor N ends.
•
Dist. unknown
Actual distance is unknown.
→ Mapping is not possible.
→ Setup for sensor N ends.
•
Manual
The range of mapping is to be defined manually.
→ Continue with the parameter set
LVL N dist. map.
.
