ULTRA 4 INSTRUCTION MANUAL
118
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 the following important information notices),
so should be set before span.
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.
Important Notice
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.
You will then be asked if you want to “Recalculate Setpoints?”, if you
choose yes (enter 1), then all Relay Setpoints will be recalculated as a
percentage of the new empty distance. Any other answer will leave the
setpoints at their original values.
Important Notice
When using the dB Mach 3 the empty distance is measured from the end of
the horn to the empty point in P104 Measurement Units.
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