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Dimensions 
P104 Measurement Units  
This parameter sets the units you want to use for programming and display 
 
P105 Empty Level 
This  parameter is to  be set to  the  maximum  distance  from  the  face  of  the 
transducer to the empty point, in P104 Measurement Units. Note this value 
affects  span  as  well,  (see  important  information  below),  so  should  be  set 
before span. 
Important Information 
When changing the Empty Distance (P105) you can also recalculate the 
values for the Span so that it equals the empty distance (P105) minus Near 
Blanking (P107) and the Relay Setpoints, so that they remain at the same 
percentage values of the empty distance as they were before you changed 
the empty distance (P105). You will be asked the question “Recalculate 
Span?” if you choose yes (enter 1), then the span will be recalculated. Any 
other answer will leave the span at its original value.  
 
 
P106 Span 
This  parameter  should  be  set  to  the  maximum  distance  from  the  Empty 
Level  (P105)  to  the  maximum  material  level.  It  is  automatically  set  to  be 
equal to the Empty Level (P105) less the Near Blanking distance (P107), 
when you set the empty level.