Advanced Parameters
Sultan Acoustic Wave Series
31
Gain4 (Gn):
This parameter is to increase or decrease the starting
Gain4 value (sensitivity to return echoes). Gain4 is
the primary gain control. The start point of this % is
after Gain Step 3 / Distance Step 3.
The result of changes can be seen immediately by
pressing CAL while adjusting the % (the unit will pulse
once and display distance & echo size). A ‘good’
signal size is approximately 0.8V. A signal above 2V
suggests Gain4 is too high.
Gain Step 3 / Distance Step 3 (G3 / D3):
Normally G3 and D3 are considered and adjusted as
a pair, and should only need adjustment to assist in
‘high level’ lock ups or structures close to and around
the transducer face (see troubleshooting / locking
onto high level).
The result of changes can be seen immediately by
pressing CAL while adjusting the % (the unit will pulse
once and display distance & echo size).
EchoSize
The unit uses automatic gain control to maintain
echo size to this value. While the unit is operating it
is displayed as the diagnostic S:. The default settings
for solid based applications is 0.6V and for Liquid
based applications 0.8V.
Threshold
Threshold is the minimum echo size the unit will
track. Any echo which passes this value (0.39V) the
unit will use automatic gain control to track and hold
to the EchoSize.
Blanking
The Blanking Distance is the minimum amount of
space which should be between the transducer face
and the product being monitored. This distance is a
blank zone, the unit will not track anything within this
distance.
Where possible use the conservative values and
increase this distance by 50% if there is foam, dust,
steam, or condensation.
See also ‘Minimum Measurement Range’
Empty Distance
The Empty Distance is similar to Blanking, the unit
will not track any echoes beyond this distance. Be
conservative with this value, any empty bin with a
conical bottom may require additional distance due to
pulses reflecting of the cone angle before returning to
the sensor face.
Digital Mapping
Digital mapping is a process where the unit scans
a vessel for all potential false echoes and applies a
filter to ignore them. Mapping should be considered
a last resort, it may interfere with the units ability to
follow the process level if not applied correctly.
Map Distance
The total distance (measured from transducer face)
the unit will map.
Map Echo
Commences mapping process.
Map Used
Select only a portion of the Map Distance to use
parameter (measured from transducer face)
Map Margin
This value is the amount of gain applied to the
mapped echoes. This value should be adjusted
in small amounts, if the value is set too high the
mapped echoes will be very large resulting in the unit
struggling to correctly following process level while it
passes the mapped area.
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