Important Information
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.
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. 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.
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.
P107 Near Blanking Distance
This parameter is the distance from the face of the transducer that is not
measurable, and is pre-set to the minimum value dependant on the Xducer
(P101) selected. It should not be set to less than this figure, but can be
increased, typically to ignore close in obstructions.
P101 = dBMach3 Transducer
Default Blanking Distance = 0.000 feet
Default Blanking Distance = 0.410 feet
Default Blanking Distance = 0.984 feet
Default Blanking Distance = 0.984 feet
Default Blanking Distance = 1.640 feet
Default Blanking Distance = 1.969 feet
Default Blanking Distance = 3.937 feet
Default Blanking Distance = 0.656 feet
Default Blanking Distance = *0.252 feet
*The signal emanates from the curved face of the Radar, but for the
purposes of measurement it is taken from the drip shield.
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