Troubleshooting
ORCA Sonar System
31
Unit is measuring incorrect Bed or Space
• Confirm display mode is correct
• Space is measured from sensor face to target.
Bed is measured from low level to target.
• Confirm High Level, Low Level and Bed Depth (if
applicable) match application requirement.
• Increase or decrease 'Gain4'. Increasing this value
makes the unit more sensitive to to interfaces within
the tank and vice versa. Programming 'Bed Depth'
sets Gain4 to a recommended value based on the
expected depth of the Bed level
• The Parameter Slope Inc%
(Advanced Menu software rev 5.81) can be used
to put more emphasis on deeper measurement -
increase this to 3%.
• High volumes of poor settling or suspended material
with attenuate the Sonar pulse. The unit may
read higher tracking suspended material if process
conditions in the tank fail.
PLC indication does not match measurement
• Disconnect the analogue wires from the amplifier.
Use a multimeter on the 4-20mA terminals labeled
IS and + to read the direct mA from the unit. Re-
connected analogue wires and compare this value
with the reading from the control system.
• Confirm High Level and Low Level are set to the
same values in amplifier and control system.
Some menu options are missing
• HAWK is constantly updating and improving the
design and accessibility of its products and as a
result older units may have different software.
Contact your local representation for information on
updating to the latest software.
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